This tells you how much bigger your breasts are than your rib cage (not simply the size of your breasts) and is represented by letters (A, B, C, etc.). To find your bra size, you’ll need to ...

But buying a new bra ... your band size and bust size. For example, if your band size is a 34, but your bust is measuring a 38, there’s a 4 point difference: A is 1, B is 2, C is 3, and D ...