Run a tape measure all the way around your body just underneath your breasts exhale (let it all out!) and take the measurement in inches. Make sure the tape measure is horizontal and fairly snug. Your arms should be down.
Measure around the biggest part of your chest, keeping the measuring tape level with the ground.
Got that number? Now subtract your band measurement from your cup measurement. Each inch represents a cup size. For example, if your band measurement is 32 inches and your cup measurement is 34 inches, the difference is two inches, and your cup size is B.
If your band measurement is 32 inches and your bust measurement is 35 inches, the difference is three inches, and your cup size is C.
If you are 31″ band size with 36″ bust, you choose 32″ band size (odd numbers doesn’t exist in size charts) and cup D, (36-32=4). If you would like tighter band size like 30″ you increase you cup size, so 30DD or if you going for looser band size 34″ you going for smaller cup size C.
Just remember that if band size goes up, the cup size goes down and if the band goes down the cup size goes up.
The underband should stay in place, not too loose, not too tight and not ride up on the back. (If this happens then it means you need smaller band size).
The breast should feel comfortable in the cup, not bulging on the top of neck line and not loose, because we have the adjustment to give the extra space when your breast needs it.
When measuring always wear a soft non wired bra!!!!, not a push up or other types of bras, because usually non wired bras are a size smaller than padded bras. Each breast is so unique that the measure guide is just a guide to help you to find your size and not 100% your size. Just remember, that the breast measurement should be measured when your most comfortable bra is on.
Remember your bra has 2 cup sizes, so the following sizes will adjust to B-C, C-D, D-DD, DD-E, E-F, F-FF, FF/G, G-GG & GG-H.
Band Conversion Chart
Cup Conversion Chart
Cup sizes that are larger than a D are called different letters by different brands (a FF cup size in one brand can be called a G or H in other brands). So know your cup size when your ordering.