Reviewed
40D vs 40DD
40DD is bigger than 40D. Same band, and 40DD has the larger cup letter, so it holds more.
Side by side
| 40D | 40DD | |
|---|---|---|
| Relationship | Same band, different cup | |
| UK | 40D | 40DD |
| AU | 18D | 18DD |
| EU | 90D | 90E |
| FR | 105D | 105E |
| Underbust | 40–41 in | 40–41 in |
| Bust | ≈ 44 in | ≈ 45 in |
| Cup volume | 40DD holds more | |
On the size chart
40D is marked in ink and 40DD is outlined. The yellow diagonal through 40D 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 40D or 40DD bigger?
40DD is bigger than 40D. Same band, and 40DD has the larger cup letter, so it holds more.
Can I wear 40DD if I'm a 40D?
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 40D and 40DD in UK sizes?
40D is UK 40D and 40DD is UK 40DD. In Europe they are 90D and 90E.