To learn your band size you will need a large mirror, non-padded bra and a soft measureing tape. Stand in front of a mirror wearing a non-padded bra. Then wrap the measuring tape around your back at band level (under each arm and around the front). Measure just above your bust, right about where the straps meet the top of the cup and enter this number in the Band Size field below.
Keeping the tape around your back at band level, measure at the fullest part of your bust. Keep the measuring tape comfortably tight so you can breathe normally. Once done, please enter this number in the Bust Size box below.