knowhersize

Reviewed

38C vs 38D

38D is bigger than 38C. Same band, and 38D has the larger cup letter, so it holds more.

Side by side

38C38D
RelationshipSame band, different cup
UK38C38D
AU16C16D
EU85C85D
FR100C100D
Underbust38–39 in38–39 in
Bust≈ 41 in≈ 42 in
Cup volume38D holds more

On the size chart

38C is marked in ink and 38D is outlined. The yellow diagonal through 38C shows every size with the same cup volume.

38C = UK 38C · AU 16C · EU 85C · FR 100C. Sister sizes: 36D, 40B. 38C in full →
A
B
C
D
DD
DDD
G
H
28
30
32
34
36
38
40
42
44

Questions

Is 38C or 38D bigger?

38D is bigger than 38C. Same band, and 38D has the larger cup letter, so it holds more.

Can I wear 38D if I'm a 38C?

Only if the fit check says so. A different cup letter on the same band changes the cup volume, so try both where returns are easy.

What are 38C and 38D in UK sizes?

38C is UK 38C and 38D is UK 38D. In Europe they are 85C and 85D.