Sister sizes refer to bra sizes that have the same volume in the cup but a different band size. For example, 34B and 32C are sister sizes. Sister sizes are helpful if you are sensitive to ...

If you don't get a whole number (e.g. 33 and 1/2 inches), or you get an odd number that's between traditional band sizes ... skim the bra in front. Step 3: Calculate to find your cup size If ...