Bra Size Guide: 26AA to 52K

This is the BraSizePRO size-by-size reference: 224 individual band-and-cup combinations from 26AA through 52K. It answers a more specific question than a calculator: what does this particular size label mean?

A bra size has two parts. The number identifies the band category around the ribcage, while the cup letter identifies a cup step relative to that band. A cup letter is therefore not an absolute volume measurement; the band number changes the physical cup associated with the letter.

How to Use This Guide

Use your measurements to get a starting size, then use the entries below to understand that label. When you shop, check the manufacturer's own chart and assess the actual garment. Brand conversion charts are generally starting references because construction and fit can vary between brands and styles.

The individual entries use a simplified measurement-difference convention: AA is about a 0-inch difference, A about 1 inch, B about 2 inches, and each following step increases the reference difference by roughly one inch. This is useful for explaining the size labels, but it is not a universal manufacturing specification.

Quick Size Index

26 Band Bra Sizes

The 26-band is the band category around the ribcage. For this reference, 26 is treated as a very small band; availability is more limited and brand-specific. The cup letter is then interpreted relative to that band. That relationship is why 26A and 26F are different cup steps, while 26F and 28F are not equivalent physical cups.

26AA

26AA combines a 26-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 26 is the band category around the ribcage, so 26AA is a complete size label rather than a cup measurement on its own.

For the 26 band, start by checking that the band sits level and comfortably firm. Because 26 is a very small band; availability is more limited and brand-specific, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

26A

26A combines a 26-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 26 is the band category around the ribcage, so 26A is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26B

26B combines a 26-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 26 is the band category around the ribcage, so 26B is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26C

26C combines a 26-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 26 is the band category around the ribcage, so 26C is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26D

26D combines a 26-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 26 is the band category around the ribcage, so 26D is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26DD

26DD combines a 26-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 26 is the band category around the ribcage, so 26DD is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26E

26E combines a 26-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 26 is the band category around the ribcage, so 26E is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26F

26F combines a 26-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 26 is the band category around the ribcage, so 26F is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26FF

26FF combines a 26-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 26 is the band category around the ribcage, so 26FF is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26G

26G combines a 26-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 26 is the band category around the ribcage, so 26G is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26GG

26GG combines a 26-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 26 is the band category around the ribcage, so 26GG is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26H

26H combines a 26-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 26 is the band category around the ribcage, so 26H is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26HH

26HH combines a 26-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 26 is the band category around the ribcage, so 26HH is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26J

26J combines a 26-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 26 is the band category around the ribcage, so 26J is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26JJ

26JJ combines a 26-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 26 is the band category around the ribcage, so 26JJ is a complete size label rather than a cup measurement on its own.

At the 26 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

26K

26K combines a 26-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 26 is the band category around the ribcage, so 26K is a complete size label rather than a cup measurement on its own.

At the 26 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

28 Band Bra Sizes

The 28-band is the band category around the ribcage. For this reference, 28 is treated as a small band commonly seen in specialist and fuller-bust ranges. The cup letter is then interpreted relative to that band. That relationship is why 28A and 28F are different cup steps, while 28F and 30F are not equivalent physical cups.

28AA

28AA combines a 28-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 28 is the band category around the ribcage, so 28AA is a complete size label rather than a cup measurement on its own.

For the 28 band, start by checking that the band sits level and comfortably firm. Because 28 is a small band commonly seen in specialist and fuller-bust ranges, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

28A

28A combines a 28-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 28 is the band category around the ribcage, so 28A is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28B

28B combines a 28-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 28 is the band category around the ribcage, so 28B is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28C

28C combines a 28-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 28 is the band category around the ribcage, so 28C is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28D

28D combines a 28-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 28 is the band category around the ribcage, so 28D is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28DD

28DD combines a 28-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 28 is the band category around the ribcage, so 28DD is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28E

28E combines a 28-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 28 is the band category around the ribcage, so 28E is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28F

28F combines a 28-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 28 is the band category around the ribcage, so 28F is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28FF

28FF combines a 28-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 28 is the band category around the ribcage, so 28FF is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28G

28G combines a 28-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 28 is the band category around the ribcage, so 28G is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28GG

28GG combines a 28-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 28 is the band category around the ribcage, so 28GG is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28H

28H combines a 28-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 28 is the band category around the ribcage, so 28H is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28HH

28HH combines a 28-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 28 is the band category around the ribcage, so 28HH is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28J

28J combines a 28-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 28 is the band category around the ribcage, so 28J is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28JJ

28JJ combines a 28-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 28 is the band category around the ribcage, so 28JJ is a complete size label rather than a cup measurement on its own.

At the 28 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

28K

28K combines a 28-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 28 is the band category around the ribcage, so 28K is a complete size label rather than a cup measurement on its own.

At the 28 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

30 Band Bra Sizes

The 30-band is the band category around the ribcage. For this reference, 30 is treated as a relatively small band with a broad range of cup options. The cup letter is then interpreted relative to that band. That relationship is why 30A and 30F are different cup steps, while 30F and 32F are not equivalent physical cups.

30AA

30AA combines a 30-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 30 is the band category around the ribcage, so 30AA is a complete size label rather than a cup measurement on its own.

For the 30 band, start by checking that the band sits level and comfortably firm. Because 30 is a relatively small band with a broad range of cup options, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

30A

30A combines a 30-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 30 is the band category around the ribcage, so 30A is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30B

30B combines a 30-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 30 is the band category around the ribcage, so 30B is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30C

30C combines a 30-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 30 is the band category around the ribcage, so 30C is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30D

30D combines a 30-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 30 is the band category around the ribcage, so 30D is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30DD

30DD combines a 30-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 30 is the band category around the ribcage, so 30DD is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30E

30E combines a 30-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 30 is the band category around the ribcage, so 30E is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30F

30F combines a 30-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 30 is the band category around the ribcage, so 30F is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30FF

30FF combines a 30-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 30 is the band category around the ribcage, so 30FF is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30G

30G combines a 30-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 30 is the band category around the ribcage, so 30G is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30GG

30GG combines a 30-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 30 is the band category around the ribcage, so 30GG is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30H

30H combines a 30-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 30 is the band category around the ribcage, so 30H is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30HH

30HH combines a 30-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 30 is the band category around the ribcage, so 30HH is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30J

30J combines a 30-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 30 is the band category around the ribcage, so 30J is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30JJ

30JJ combines a 30-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 30 is the band category around the ribcage, so 30JJ is a complete size label rather than a cup measurement on its own.

At the 30 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

30K

30K combines a 30-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 30 is the band category around the ribcage, so 30K is a complete size label rather than a cup measurement on its own.

At the 30 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

32 Band Bra Sizes

The 32-band is the band category around the ribcage. For this reference, 32 is treated as a common band reference across many size charts. The cup letter is then interpreted relative to that band. That relationship is why 32A and 32F are different cup steps, while 32F and 34F are not equivalent physical cups.

32AA

32AA combines a 32-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 32 is the band category around the ribcage, so 32AA is a complete size label rather than a cup measurement on its own.

For the 32 band, start by checking that the band sits level and comfortably firm. Because 32 is a common band reference across many size charts, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

32A

32A combines a 32-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 32 is the band category around the ribcage, so 32A is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32B

32B combines a 32-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 32 is the band category around the ribcage, so 32B is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32C

32C combines a 32-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 32 is the band category around the ribcage, so 32C is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32D

32D combines a 32-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 32 is the band category around the ribcage, so 32D is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32DD

32DD combines a 32-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 32 is the band category around the ribcage, so 32DD is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32E

32E combines a 32-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 32 is the band category around the ribcage, so 32E is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32F

32F combines a 32-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 32 is the band category around the ribcage, so 32F is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32FF

32FF combines a 32-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 32 is the band category around the ribcage, so 32FF is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32G

32G combines a 32-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 32 is the band category around the ribcage, so 32G is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32GG

32GG combines a 32-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 32 is the band category around the ribcage, so 32GG is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32H

32H combines a 32-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 32 is the band category around the ribcage, so 32H is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32HH

32HH combines a 32-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 32 is the band category around the ribcage, so 32HH is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32J

32J combines a 32-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 32 is the band category around the ribcage, so 32J is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32JJ

32JJ combines a 32-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 32 is the band category around the ribcage, so 32JJ is a complete size label rather than a cup measurement on its own.

At the 32 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

32K

32K combines a 32-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 32 is the band category around the ribcage, so 32K is a complete size label rather than a cup measurement on its own.

At the 32 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

34 Band Bra Sizes

The 34-band is the band category around the ribcage. For this reference, 34 is treated as a widely used mid-range band. The cup letter is then interpreted relative to that band. That relationship is why 34A and 34F are different cup steps, while 34F and 36F are not equivalent physical cups.

34AA

34AA combines a 34-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 34 is the band category around the ribcage, so 34AA is a complete size label rather than a cup measurement on its own.

For the 34 band, start by checking that the band sits level and comfortably firm. Because 34 is a widely used mid-range band, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

34A

34A combines a 34-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 34 is the band category around the ribcage, so 34A is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34B

34B combines a 34-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 34 is the band category around the ribcage, so 34B is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34C

34C combines a 34-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 34 is the band category around the ribcage, so 34C is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34D

34D combines a 34-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 34 is the band category around the ribcage, so 34D is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34DD

34DD combines a 34-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 34 is the band category around the ribcage, so 34DD is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34E

34E combines a 34-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 34 is the band category around the ribcage, so 34E is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34F

34F combines a 34-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 34 is the band category around the ribcage, so 34F is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34FF

34FF combines a 34-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 34 is the band category around the ribcage, so 34FF is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34G

34G combines a 34-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 34 is the band category around the ribcage, so 34G is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34GG

34GG combines a 34-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 34 is the band category around the ribcage, so 34GG is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34H

34H combines a 34-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 34 is the band category around the ribcage, so 34H is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34HH

34HH combines a 34-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 34 is the band category around the ribcage, so 34HH is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34J

34J combines a 34-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 34 is the band category around the ribcage, so 34J is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34JJ

34JJ combines a 34-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 34 is the band category around the ribcage, so 34JJ is a complete size label rather than a cup measurement on its own.

At the 34 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

34K

34K combines a 34-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 34 is the band category around the ribcage, so 34K is a complete size label rather than a cup measurement on its own.

At the 34 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

36 Band Bra Sizes

The 36-band is the band category around the ribcage. For this reference, 36 is treated as a common band size with many cup options. The cup letter is then interpreted relative to that band. That relationship is why 36A and 36F are different cup steps, while 36F and 38F are not equivalent physical cups.

36AA

36AA combines a 36-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 36 is the band category around the ribcage, so 36AA is a complete size label rather than a cup measurement on its own.

For the 36 band, start by checking that the band sits level and comfortably firm. Because 36 is a common band size with many cup options, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

36A

36A combines a 36-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 36 is the band category around the ribcage, so 36A is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36B

36B combines a 36-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 36 is the band category around the ribcage, so 36B is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36C

36C combines a 36-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 36 is the band category around the ribcage, so 36C is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36D

36D combines a 36-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 36 is the band category around the ribcage, so 36D is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36DD

36DD combines a 36-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 36 is the band category around the ribcage, so 36DD is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36E

36E combines a 36-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 36 is the band category around the ribcage, so 36E is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36F

36F combines a 36-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 36 is the band category around the ribcage, so 36F is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36FF

36FF combines a 36-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 36 is the band category around the ribcage, so 36FF is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36G

36G combines a 36-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 36 is the band category around the ribcage, so 36G is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36GG

36GG combines a 36-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 36 is the band category around the ribcage, so 36GG is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36H

36H combines a 36-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 36 is the band category around the ribcage, so 36H is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36HH

36HH combines a 36-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 36 is the band category around the ribcage, so 36HH is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36J

36J combines a 36-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 36 is the band category around the ribcage, so 36J is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36JJ

36JJ combines a 36-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 36 is the band category around the ribcage, so 36JJ is a complete size label rather than a cup measurement on its own.

At the 36 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

36K

36K combines a 36-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 36 is the band category around the ribcage, so 36K is a complete size label rather than a cup measurement on its own.

At the 36 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

38 Band Bra Sizes

The 38-band is the band category around the ribcage. For this reference, 38 is treated as a common band size across mainstream and specialist ranges. The cup letter is then interpreted relative to that band. That relationship is why 38A and 38F are different cup steps, while 38F and 40F are not equivalent physical cups.

38AA

38AA combines a 38-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 38 is the band category around the ribcage, so 38AA is a complete size label rather than a cup measurement on its own.

For the 38 band, start by checking that the band sits level and comfortably firm. Because 38 is a common band size across mainstream and specialist ranges, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

38A

38A combines a 38-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 38 is the band category around the ribcage, so 38A is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38B

38B combines a 38-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 38 is the band category around the ribcage, so 38B is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38C

38C combines a 38-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 38 is the band category around the ribcage, so 38C is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38D

38D combines a 38-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 38 is the band category around the ribcage, so 38D is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38DD

38DD combines a 38-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 38 is the band category around the ribcage, so 38DD is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38E

38E combines a 38-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 38 is the band category around the ribcage, so 38E is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38F

38F combines a 38-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 38 is the band category around the ribcage, so 38F is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38FF

38FF combines a 38-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 38 is the band category around the ribcage, so 38FF is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38G

38G combines a 38-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 38 is the band category around the ribcage, so 38G is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38GG

38GG combines a 38-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 38 is the band category around the ribcage, so 38GG is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38H

38H combines a 38-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 38 is the band category around the ribcage, so 38H is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38HH

38HH combines a 38-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 38 is the band category around the ribcage, so 38HH is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38J

38J combines a 38-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 38 is the band category around the ribcage, so 38J is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38JJ

38JJ combines a 38-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 38 is the band category around the ribcage, so 38JJ is a complete size label rather than a cup measurement on its own.

At the 38 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

38K

38K combines a 38-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 38 is the band category around the ribcage, so 38K is a complete size label rather than a cup measurement on its own.

At the 38 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

40 Band Bra Sizes

The 40-band is the band category around the ribcage. For this reference, 40 is treated as a larger band reference with broad cup availability. The cup letter is then interpreted relative to that band. That relationship is why 40A and 40F are different cup steps, while 40F and 42F are not equivalent physical cups.

40AA

40AA combines a 40-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 40 is the band category around the ribcage, so 40AA is a complete size label rather than a cup measurement on its own.

For the 40 band, start by checking that the band sits level and comfortably firm. Because 40 is a larger band reference with broad cup availability, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

40A

40A combines a 40-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 40 is the band category around the ribcage, so 40A is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40B

40B combines a 40-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 40 is the band category around the ribcage, so 40B is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40C

40C combines a 40-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 40 is the band category around the ribcage, so 40C is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40D

40D combines a 40-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 40 is the band category around the ribcage, so 40D is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40DD

40DD combines a 40-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 40 is the band category around the ribcage, so 40DD is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40E

40E combines a 40-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 40 is the band category around the ribcage, so 40E is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40F

40F combines a 40-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 40 is the band category around the ribcage, so 40F is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40FF

40FF combines a 40-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 40 is the band category around the ribcage, so 40FF is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40G

40G combines a 40-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 40 is the band category around the ribcage, so 40G is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40GG

40GG combines a 40-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 40 is the band category around the ribcage, so 40GG is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40H

40H combines a 40-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 40 is the band category around the ribcage, so 40H is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40HH

40HH combines a 40-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 40 is the band category around the ribcage, so 40HH is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40J

40J combines a 40-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 40 is the band category around the ribcage, so 40J is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40JJ

40JJ combines a 40-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 40 is the band category around the ribcage, so 40JJ is a complete size label rather than a cup measurement on its own.

At the 40 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

40K

40K combines a 40-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 40 is the band category around the ribcage, so 40K is a complete size label rather than a cup measurement on its own.

At the 40 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

42 Band Bra Sizes

The 42-band is the band category around the ribcage. For this reference, 42 is treated as a larger band that should still be fitted firmly enough to stay level. The cup letter is then interpreted relative to that band. That relationship is why 42A and 42F are different cup steps, while 42F and 44F are not equivalent physical cups.

42AA

42AA combines a 42-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 42 is the band category around the ribcage, so 42AA is a complete size label rather than a cup measurement on its own.

For the 42 band, start by checking that the band sits level and comfortably firm. Because 42 is a larger band that should still be fitted firmly enough to stay level, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

42A

42A combines a 42-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 42 is the band category around the ribcage, so 42A is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42B

42B combines a 42-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 42 is the band category around the ribcage, so 42B is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42C

42C combines a 42-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 42 is the band category around the ribcage, so 42C is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42D

42D combines a 42-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 42 is the band category around the ribcage, so 42D is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42DD

42DD combines a 42-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 42 is the band category around the ribcage, so 42DD is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42E

42E combines a 42-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 42 is the band category around the ribcage, so 42E is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42F

42F combines a 42-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 42 is the band category around the ribcage, so 42F is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42FF

42FF combines a 42-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 42 is the band category around the ribcage, so 42FF is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42G

42G combines a 42-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 42 is the band category around the ribcage, so 42G is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42GG

42GG combines a 42-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 42 is the band category around the ribcage, so 42GG is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42H

42H combines a 42-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 42 is the band category around the ribcage, so 42H is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42HH

42HH combines a 42-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 42 is the band category around the ribcage, so 42HH is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42J

42J combines a 42-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 42 is the band category around the ribcage, so 42J is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42JJ

42JJ combines a 42-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 42 is the band category around the ribcage, so 42JJ is a complete size label rather than a cup measurement on its own.

At the 42 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

42K

42K combines a 42-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 42 is the band category around the ribcage, so 42K is a complete size label rather than a cup measurement on its own.

At the 42 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

44 Band Bra Sizes

The 44-band is the band category around the ribcage. For this reference, 44 is treated as a larger band where cup shape and wire width can become especially important. The cup letter is then interpreted relative to that band. That relationship is why 44A and 44F are different cup steps, while 44F and 46F are not equivalent physical cups.

44AA

44AA combines a 44-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 44 is the band category around the ribcage, so 44AA is a complete size label rather than a cup measurement on its own.

For the 44 band, start by checking that the band sits level and comfortably firm. Because 44 is a larger band where cup shape and wire width can become especially important, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

44A

44A combines a 44-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 44 is the band category around the ribcage, so 44A is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44B

44B combines a 44-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 44 is the band category around the ribcage, so 44B is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44C

44C combines a 44-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 44 is the band category around the ribcage, so 44C is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44D

44D combines a 44-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 44 is the band category around the ribcage, so 44D is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44DD

44DD combines a 44-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 44 is the band category around the ribcage, so 44DD is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44E

44E combines a 44-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 44 is the band category around the ribcage, so 44E is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44F

44F combines a 44-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 44 is the band category around the ribcage, so 44F is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44FF

44FF combines a 44-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 44 is the band category around the ribcage, so 44FF is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44G

44G combines a 44-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 44 is the band category around the ribcage, so 44G is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44GG

44GG combines a 44-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 44 is the band category around the ribcage, so 44GG is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44H

44H combines a 44-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 44 is the band category around the ribcage, so 44H is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44HH

44HH combines a 44-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 44 is the band category around the ribcage, so 44HH is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44J

44J combines a 44-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 44 is the band category around the ribcage, so 44J is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44JJ

44JJ combines a 44-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 44 is the band category around the ribcage, so 44JJ is a complete size label rather than a cup measurement on its own.

At the 44 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

44K

44K combines a 44-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 44 is the band category around the ribcage, so 44K is a complete size label rather than a cup measurement on its own.

At the 44 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

46 Band Bra Sizes

The 46-band is the band category around the ribcage. For this reference, 46 is treated as a larger band commonly offered across extended-size ranges. The cup letter is then interpreted relative to that band. That relationship is why 46A and 46F are different cup steps, while 46F and 48F are not equivalent physical cups.

46AA

46AA combines a 46-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 46 is the band category around the ribcage, so 46AA is a complete size label rather than a cup measurement on its own.

For the 46 band, start by checking that the band sits level and comfortably firm. Because 46 is a larger band commonly offered across extended-size ranges, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

46A

46A combines a 46-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 46 is the band category around the ribcage, so 46A is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46B

46B combines a 46-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 46 is the band category around the ribcage, so 46B is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46C

46C combines a 46-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 46 is the band category around the ribcage, so 46C is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46D

46D combines a 46-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 46 is the band category around the ribcage, so 46D is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46DD

46DD combines a 46-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 46 is the band category around the ribcage, so 46DD is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46E

46E combines a 46-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 46 is the band category around the ribcage, so 46E is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46F

46F combines a 46-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 46 is the band category around the ribcage, so 46F is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46FF

46FF combines a 46-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 46 is the band category around the ribcage, so 46FF is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46G

46G combines a 46-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 46 is the band category around the ribcage, so 46G is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46GG

46GG combines a 46-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 46 is the band category around the ribcage, so 46GG is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46H

46H combines a 46-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 46 is the band category around the ribcage, so 46H is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46HH

46HH combines a 46-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 46 is the band category around the ribcage, so 46HH is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46J

46J combines a 46-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 46 is the band category around the ribcage, so 46J is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46JJ

46JJ combines a 46-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 46 is the band category around the ribcage, so 46JJ is a complete size label rather than a cup measurement on its own.

At the 46 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

46K

46K combines a 46-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 46 is the band category around the ribcage, so 46K is a complete size label rather than a cup measurement on its own.

At the 46 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

48 Band Bra Sizes

The 48-band is the band category around the ribcage. For this reference, 48 is treated as an extended band size with availability varying by brand. The cup letter is then interpreted relative to that band. That relationship is why 48A and 48F are different cup steps, while 48F and 50F are not equivalent physical cups.

48AA

48AA combines a 48-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 48 is the band category around the ribcage, so 48AA is a complete size label rather than a cup measurement on its own.

For the 48 band, start by checking that the band sits level and comfortably firm. Because 48 is an extended band size with availability varying by brand, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

48A

48A combines a 48-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 48 is the band category around the ribcage, so 48A is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48B

48B combines a 48-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 48 is the band category around the ribcage, so 48B is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48C

48C combines a 48-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 48 is the band category around the ribcage, so 48C is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48D

48D combines a 48-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 48 is the band category around the ribcage, so 48D is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48DD

48DD combines a 48-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 48 is the band category around the ribcage, so 48DD is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48E

48E combines a 48-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 48 is the band category around the ribcage, so 48E is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48F

48F combines a 48-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 48 is the band category around the ribcage, so 48F is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48FF

48FF combines a 48-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 48 is the band category around the ribcage, so 48FF is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48G

48G combines a 48-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 48 is the band category around the ribcage, so 48G is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48GG

48GG combines a 48-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 48 is the band category around the ribcage, so 48GG is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48H

48H combines a 48-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 48 is the band category around the ribcage, so 48H is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48HH

48HH combines a 48-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 48 is the band category around the ribcage, so 48HH is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48J

48J combines a 48-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 48 is the band category around the ribcage, so 48J is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48JJ

48JJ combines a 48-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 48 is the band category around the ribcage, so 48JJ is a complete size label rather than a cup measurement on its own.

At the 48 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

48K

48K combines a 48-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 48 is the band category around the ribcage, so 48K is a complete size label rather than a cup measurement on its own.

At the 48 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

50 Band Bra Sizes

The 50-band is the band category around the ribcage. For this reference, 50 is treated as an extended band size; specialist ranges may offer more choices than general retail. The cup letter is then interpreted relative to that band. That relationship is why 50A and 50F are different cup steps, while 50F and 52F are not equivalent physical cups.

50AA

50AA combines a 50-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 50 is the band category around the ribcage, so 50AA is a complete size label rather than a cup measurement on its own.

For the 50 band, start by checking that the band sits level and comfortably firm. Because 50 is an extended band size; specialist ranges may offer more choices than general retail, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

50A

50A combines a 50-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 50 is the band category around the ribcage, so 50A is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50B

50B combines a 50-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 50 is the band category around the ribcage, so 50B is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50C

50C combines a 50-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 50 is the band category around the ribcage, so 50C is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50D

50D combines a 50-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 50 is the band category around the ribcage, so 50D is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50DD

50DD combines a 50-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 50 is the band category around the ribcage, so 50DD is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50E

50E combines a 50-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 50 is the band category around the ribcage, so 50E is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50F

50F combines a 50-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 50 is the band category around the ribcage, so 50F is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50FF

50FF combines a 50-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 50 is the band category around the ribcage, so 50FF is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50G

50G combines a 50-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 50 is the band category around the ribcage, so 50G is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50GG

50GG combines a 50-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 50 is the band category around the ribcage, so 50GG is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50H

50H combines a 50-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 50 is the band category around the ribcage, so 50H is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50HH

50HH combines a 50-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 50 is the band category around the ribcage, so 50HH is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50J

50J combines a 50-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 50 is the band category around the ribcage, so 50J is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50JJ

50JJ combines a 50-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 50 is the band category around the ribcage, so 50JJ is a complete size label rather than a cup measurement on its own.

At the 50 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

50K

50K combines a 50-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 50 is the band category around the ribcage, so 50K is a complete size label rather than a cup measurement on its own.

At the 50 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

52 Band Bra Sizes

The 52-band is the band category around the ribcage. For this reference, 52 is treated as a very extended band size; availability and labeling are particularly brand-dependent. The cup letter is then interpreted relative to that band. That relationship is why 52A and 52F are different cup steps, while 52F and 54F are not equivalent physical cups.

52AA

52AA combines a 52-band with a AA cup. In the simplified reference scale used on this page, AA represents about 0 inches between bust and underbust. The 52 is the band category around the ribcage, so 52AA is a complete size label rather than a cup measurement on its own.

For the 52 band, start by checking that the band sits level and comfortably firm. Because 52 is a very extended band size; availability and labeling are particularly brand-dependent, availability can be more limited, so compare the brand's measurements rather than assuming the label is standardized.

52A

52A combines a 52-band with a A cup. In the simplified reference scale used on this page, A represents about 1 inch between bust and underbust. The 52 is the band category around the ribcage, so 52A is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from A to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52B

52B combines a 52-band with a B cup. In the simplified reference scale used on this page, B represents about 2 inches between bust and underbust. The 52 is the band category around the ribcage, so 52B is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from B to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52C

52C combines a 52-band with a C cup. In the simplified reference scale used on this page, C represents about 3 inches between bust and underbust. The 52 is the band category around the ribcage, so 52C is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from C to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52D

52D combines a 52-band with a D cup. In the simplified reference scale used on this page, D represents about 4 inches between bust and underbust. The 52 is the band category around the ribcage, so 52D is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from D to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52DD

52DD combines a 52-band with a DD cup. In the simplified reference scale used on this page, DD represents about 5 inches between bust and underbust. The 52 is the band category around the ribcage, so 52DD is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from DD to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52E

52E combines a 52-band with a E cup. In the simplified reference scale used on this page, E represents about 6 inches between bust and underbust. The 52 is the band category around the ribcage, so 52E is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from E to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52F

52F combines a 52-band with a F cup. In the simplified reference scale used on this page, F represents about 7 inches between bust and underbust. The 52 is the band category around the ribcage, so 52F is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from F to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52FF

52FF combines a 52-band with a FF cup. In the simplified reference scale used on this page, FF represents about 8 inches between bust and underbust. The 52 is the band category around the ribcage, so 52FF is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from FF to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52G

52G combines a 52-band with a G cup. In the simplified reference scale used on this page, G represents about 9 inches between bust and underbust. The 52 is the band category around the ribcage, so 52G is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from G to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52GG

52GG combines a 52-band with a GG cup. In the simplified reference scale used on this page, GG represents about 10 inches between bust and underbust. The 52 is the band category around the ribcage, so 52GG is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from GG to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52H

52H combines a 52-band with a H cup. In the simplified reference scale used on this page, H represents about 11 inches between bust and underbust. The 52 is the band category around the ribcage, so 52H is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from H to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52HH

52HH combines a 52-band with a HH cup. In the simplified reference scale used on this page, HH represents about 12 inches between bust and underbust. The 52 is the band category around the ribcage, so 52HH is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from HH to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52J

52J combines a 52-band with a J cup. In the simplified reference scale used on this page, J represents about 13 inches between bust and underbust. The 52 is the band category around the ribcage, so 52J is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from J to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52JJ

52JJ combines a 52-band with a JJ cup. In the simplified reference scale used on this page, JJ represents about 14 inches between bust and underbust. The 52 is the band category around the ribcage, so 52JJ is a complete size label rather than a cup measurement on its own.

At the 52 band, moving from JJ to the next cup step changes cup capacity without changing the band number. If the band feels right but the cup does not, adjust the cup first; if both are off, go back to the measurements and the garment's shape.

52K

52K combines a 52-band with a K cup. In the simplified reference scale used on this page, K represents about 15 inches between bust and underbust. The 52 is the band category around the ribcage, so 52K is a complete size label rather than a cup measurement on its own.

At the 52 band, K is the last cup step covered by this guide. Extended sizes are especially dependent on the manufacturer's pattern, so compare cup depth, wire width, band tension and the brand's own chart before buying.

What Changes When You Move Between Sizes?

Keeping the band number and changing the cup letter changes the cup step. Keeping the cup letter and changing the band changes the physical cup as well as the band. This is the basic idea behind sister sizing: nearby sizes can have related cup capacity while using different band numbers and cup letters.

If the band feels comfortable and level but the cups are too small, look at a larger cup on the same band first. If the cups are close but the band is too loose or too firm, an adjacent sister size may be worth trying. A different cup shape can also solve a problem that changing size alone cannot.

Why the Same Label Can Fit Differently

A size label does not describe every detail of a bra's construction. Cup depth, cup width, wire shape, fabric stretch, strap placement and pattern grading all affect how the garment sits. This is why specialist size charts advise shoppers to use conversions as a starting point and then consider the actual fit.

Before You Buy

1. Take a snug underbust and standing bust measurement with a flexible tape.
2. Use the BraSizePRO calculator for a measurement-based starting point.
3. Find your resulting band and cup in this guide to understand the label.
4. Check the manufacturer's own chart, especially for extended bands and cups.
5. When trying the bra, judge the band, cups, wires and overall comfort together.

Extended Sizes Need Extra Care

The presence of a size in this guide does not mean that every retailer or manufacturer offers it. Current specialist charts demonstrate that availability can begin at 28 and that UK-style cup progressions can extend through K, while another brand may use a different range. Treat 26, 50, 52 and extended cup sizes as particularly brand-dependent rather than assuming universal availability.

BraSizePRO uses size labels as reference points, not guarantees. If your exact size is difficult to find, do not automatically move several band sizes upward just to obtain a larger cup. Use sister sizing deliberately and check the fit of the actual garment.

Related BraSizePRO Tools

• Universal Bra Size Calculator — calculate a measurement-based starting point.
• Sister Size Calculator — explore adjacent band-and-cup options.
• Bra Fit Checker — review common fit problems.
• Bra Measurement Chart — compare measurement references.
• Bra Cup Size Guide — understand cup progressions in more detail.