knowhersize

Reviewed

36DDD vs 38DDD

38DDD is bigger than 36DDD. The cup letter is the same, but cup volume grows with the band, so 38DDD's cups hold more as well as having the longer band.

Side by side

36DDD38DDD
RelationshipSame cup letter, different band
UK36E38E
AU14E16E
EU80F85F
FR95F100F
Underbust36–37 in38–39 in
Bust≈ 42 in≈ 44 in
Cup volume38DDD holds more

On the size chart

36DDD is marked in ink and 38DDD is outlined. The yellow diagonal through 36DDD shows every size with the same cup volume.

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

Questions

Is 36DDD or 38DDD bigger?

38DDD is bigger than 36DDD. The cup letter is the same, but cup volume grows with the band, so 38DDD's cups hold more as well as having the longer band.

Can I wear 38DDD if I'm a 36DDD?

Only if the fit check says so. Changing the band also changes the cup volume, so try both where returns are easy.

What are 36DDD and 38DDD in UK sizes?

36DDD is UK 36E and 38DDD is UK 38E. In Europe they are 80F and 85F.