A 38F bra fits a 38 inch underband with a seven inch difference between your underbust and the fullest part of your bust. At this size the band carries most of the weight, so a firm, level fit across your back matters more than the straps do.
Our 38F bras come from Fantasie, Elomi, Panache and Royce, in full cup, side support, non wired and sports styles, all held in UK stock. If the band rides up, your sister size is 36FF. If it digs in, 40E holds the same cup volume on a bigger band.
Everyday Support at a 38F
Full cup and side support styles are the reliable daily choice at this size. Elomi and Fantasie both cut a deep underband with wide side wings that stop the bra shifting through the day, and Royce covers non wired 38F bras for softer support.
38F Sports Bras
For running or high impact training, an underwired encapsulation sports bra controls a 38F better than a compression crop, which flattens rather than supports. Shock Absorber and Panache Sport both make this size.
Checking Your 38F Fit
The band should feel firm on the loosest hook and stay level across your back. If it rides up, the band is too big rather than the cups too small. If the cups overflow, try 38FF. If they gape, try 38E. Our fitting guide and bra size calculator will confirm it before you order.
Related Sizes
All F Cup Bras |
28F Bras |
30F Bras |
32F Bras |
34F Bras |
36F Bras |
38F Bras |
40F Bras |
42F Bras |
44F Bras |
46F Bras |
48F Bras