First put on your favorite bra that you think makes your breasts the right shape and feels most comfortable. Next you will need to find a flexible measuring tape (the kind a seamstress would use). You may also need to grab a trusted friend to help you measure, since it is difficult to keep the tape level around your body. The first measurement to take is around your ribcage, just below your breasts. Now add 5 to this number to get your band size. If the resulting band size was an odd number, you will need to round up to the next even number since bra bands only come in even numbers. The second measurement should be taken around the fullest part of your bosom with your favorite bra on. This measurement is your cup size. Next subtract your band size from your cup size to calculate the right cup size. Refer to the bra cup size chart below:
Bra Size Chart
1 larger than measurement 1----A2 larger than measurement 1----B
3 larger than measurement 1----C
4 larger than measurement 1----D
5 larger than measurement 1----E
6 larger than measurement 1----F
What the Right Bra Size Shouldn’t Do
Breasts should not fall out below the bra when raising your hands above your head. If they do try, going down a band size. The middle part of your bra that sits between your breasts should sit flat on your rib cage. If it doesn’t try, going up a cup size.
The band of your bra should stay level around the circumference of your body. A band that rides up in the back means your band size is too big.
The bra straps should only be 10% of the support your bra gives. If your bras straps are doing all the work, consider going down a band size.
Breasts should fit comfortably into the bra cup with no overflow, double-bubble, or wrinkles in the bra fabric.
Your bra band should not be giving you the illusion of back fat. If this is happening try a larger band size or a difference style bra.
