knowhersize

Reviewed

38DD vs 38DDD

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

Side by side

38DD38DDD
RelationshipSame band, different cup
UK38DD38E
AU16DD16E
EU85E85F
FR100E100F
Underbust38–39 in38–39 in
Bust≈ 43 in≈ 44 in
Cup volume38DDD holds more

On the size chart

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

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

Questions

Is 38DD or 38DDD bigger?

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

Can I wear 38DDD if I'm a 38DD?

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 38DD and 38DDD in UK sizes?

38DD is UK 38DD and 38DDD is UK 38E. In Europe they are 85E and 85F.