Dr. Sajjadian’s Guide to Figuring Out Bra Sizes

As a Breast Augmentation surgeon, Dr. Sajjadian often gets asked about bra sizes. In this infographic, he describes how to understand the numbers and letters of bra sizes and to determine your true bra size.

Numbers represent your band size, or the measurement around your rib cage just below your breasts. Dr. Sajjadian’s equation will help you figure out your bra size number:

Number = Band Size (Round to the nearest whole #) + 4 (or 5 if the # is odd)

Letters represent your bust size, or the measurement around your chest at nipple level. This is the equation to determining your bra size letter:

Letter = Bust – Band Size

1 = A, 2 = B, 3 = C