Wrap the measuring tape around the fullest part of your chest (usually across the nipples). Ensure the tape is straight across your back and not tilted. Round this measurement to the nearest whole number. 3. Calculate Your Cup Size
A calculated size is just a starting point; different styles like those found at Lane Bryant or la Vie en Rose may fit differently. Use these checks to confirm: how to know what size bra to buy
Your breasts should be fully encased in the cups without bulging over the top (spillage) or leaving gaps in the fabric. Wrap the measuring tape around the fullest part
You should be able to fit two fingers under the band comfortably. how to know what size bra to buy