Cup sizes are based on two measurements: the breast at its fullest point, minus the rib-cage measurement. ... To fit the bras, Jockey uses a kit with 10 plastic cups in varying shapes, along with a measuring tape. Customers are meant to try on the cups and see what works best, and then measure their rib cage.May 30, 2013
How do you tell what size a cup is?
Take your bust measurement (usually the bigger number) and subtract your band measurement. This number corresponds with your cup size. If your bust measurement and band measurement are the same number, you're an AA cup.Feb 27, 2020