Preparing To Measure

For best results, measure yourself wearing an unlined or lightly lined bra.

Step One: Band Size

Using a soft tape-measure, measure around the ribcage directly under the bust. The tape should rest on the lower band of your bra. Be sure the tape is snug, smooth across the back and level with the front.

Add 5 to this measurement to obtain your band size. For example, if your ribcage measurement is 29" + (5) = 34" band size. If the resulting band size is an odd number like 33", you can usually go to the next even band size (34"), but you may also want to try the next lower band size (32").

Step Two: Cup Size

Measure completely around the bust at the fullest point, holding the tape measure straight but not tight. The difference between this measurement and your BAND size is your cup size. Each inch of difference is equal to one cup size. For example, if your band size is 34" and your bust measurement is 35", you wear an "A" cup.
if the difference is:
less than 1 inch = AA cup
1 inch = A cup
2 inches = B cup
3 inches = C cup
4 inches = D cup
5 inches = DD cup

While this method is generally reliable, every woman's figure is different and results may vary slightly. We recommend that you try several sizes and styles to find the fit that works best for you