Reviewed
40DD vs 38DDD
40DD and 38DDD are sister sizes: the cups hold the same volume. 40DD has the looser band and 38DDD the firmer one, so pick by how the band feels.
Side by side
| 40DD | 38DDD | |
|---|---|---|
| Relationship | Sister sizes | |
| UK | 40DD | 38E |
| AU | 18DD | 16E |
| EU | 90E | 85F |
| FR | 105E | 100F |
| Underbust | 40–41 in | 38–39 in |
| Bust | ≈ 45 in | ≈ 44 in |
| Cup volume | Same | |
On the size chart
40DD is marked in ink and 38DDD is outlined. The yellow diagonal through 40DD shows every size with the same cup volume.
A
B
C
D
DD
DDD
G
H
28
30
32
34
36
38
40
42
44
Read each size
Questions
Is 40DD the same as 38DDD?
40DD and 38DDD are sister sizes: the cups hold the same volume. 40DD has the looser band and 38DDD the firmer one, so pick by how the band feels.
Can I wear 38DDD if I'm a 40DD?
Often, yes. The cups hold the same volume, so the change you'll feel is the band: 38DDD is firmer. Choose by how the band sits, level and snug on the loosest hook.
What are 40DD and 38DDD in UK sizes?
40DD is UK 40DD and 38DDD is UK 38E. In Europe they are 90E and 85F.