knowhersize

Reviewed

36D vs 36DD

36DD is bigger than 36D. Same band, and 36DD has the larger cup letter, so it holds more.

Side by side

36D36DD
RelationshipSame band, different cup
UK36D36DD
AU14D14DD
EU80D80E
FR95D95E
Underbust36–37 in36–37 in
Bust≈ 40 in≈ 41 in
Cup volume36DD holds more

On the size chart

36D is marked in ink and 36DD is outlined. The yellow diagonal through 36D shows every size with the same cup volume.

36D = UK 36D · AU 14D · EU 80D · FR 95D. Sister sizes: 34DD, 38C. 36D in full →
A
B
C
D
DD
DDD
G
H
28
30
32
34
36
38
40
42
44

Questions

Is 36D or 36DD bigger?

36DD is bigger than 36D. Same band, and 36DD has the larger cup letter, so it holds more.

Can I wear 36DD if I'm a 36D?

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 36D and 36DD in UK sizes?

36D is UK 36D and 36DD is UK 36DD. In Europe they are 80D and 80E.