If your bra isn’t fitting quite right, not to worry. Here’s how to find the right size to try next:
First, identify whether the problem is the band or the cups—or both. Are they too snug or too loose?
Once you know that, remember that bra sizes aren’t like clothing sizes, where a 12 is simply larger than an 8—they’re actually more like ratios.
The volume of a cup size (how much breast tissue it can hold) varies with the band size. If you go up a band size, then you need to go down a cup size for the equivalent cup volume. For example, a 36D is the same cup volume as a 38C.
With that knowledge, here are three likely scenarios and how to solve them:
- Your band fits, but your cup doesn’t: You’ll need to go up or down a cup size.
- Your cup fits, but your band doesn’t: You’ll need to go up or down a band size AND adjust your cup size. Remember that as band size goes up, the equivalent cup size goes down, and vice versa. So if a 34C band is too tight, but the cups fit well, try a 36B.
- Neither your band or cup fit: If both are too big, go down a band size. If both are too small, go up a band size. Remember that by changing band size, the cup size will also naturally adjust. So if a 32D band and cups are both too small, try a 34D. You’ll be getting both a larger band and cup (even though the letter is the same) that way.
Check out our chart of sister sizes to see the full range of equivalent cup sizes: