knowhersize

Reviewed

38C bra size

A 38C has a 38-inch band and a C cup, about 3 inches between band and bust. In the UK it is 38C, in Australia 16C and in Europe 85C.

US
38C
UK
38C
AU
16C
EU
85C
FR
100C

Also fits (sister sizes): 36D firmer band · 40B looser band · all same-volume sizes ↓

38C measurements

Snug underbust
38–39 in · 97–99 cm
Bust, fullest part
about 41 in · 103–105 cm
Cup difference
3 in (C cup)

These are starting points from the band-and-cup method. Brands differ by about a size, so a two-minute measurement beats any chart.

38C sister sizes

Same cup volume, different band. If a 38C band feels too loose, go down a band and up a cup; if it feels tight, go up a band and down a cup.

38C = UK 38C · AU 16C · EU 85C · FR 100C. Sister sizes: 36D, 40B. 38C in full →
A
B
C
D
DD
DDD
G
H
28
30
32
34
36
38
40
42
44
28H30G32DDD34DD36D38C40B42A44AA

If a 38C doesn't fit

Band rides up at the back
Try 36D
Band digs in, cups fit
Try 40B
Spilling over the cups
Try 38D
Cups gape or wrinkle
Try 38B

Not sure what's wrong? Run through the 4-point fit check.

38C questions

What is the sister size of 38C?

36D (one band down, one cup up) and 40B (one band up, one cup down). Sister sizes hold the same cup volume on a different band.

What is 38C in UK, Australian and European sizes?

UK 38C, Australia 16C, Europe 85C and France 100C. US and UK cup letters match up to DD and then split.

What measurements are a 38C?

A snug underbust of about 38–39 in (97–99 cm) and a bust of about 41 in (103–105 cm). Measure with the tape level and use the calculator for an exact result.

Is 38C a big size?

38C has a fuller cup volume for a 38 band. Cup letters only mean something next to the band: a 38C holds the same as 28H or 30G.