Determining your Bra Size
While determining your bra size remember that there are two components that you have to take care of. First being the Band size and the other being the cup size.
Always take your measurements on your bare skin.
Stand erect and breathe relaxed and normal.
Your band size is also your chest size.
Measure the circumference of your chest either above your breasts, ie, upper chest band size or below your breasts, ie, under bust band size. Both measurements may be aptly used for determining your bra size.
Upper chest band size is the circumference around the breasts, under your armpits. For every odd number, round up to the nearest even number. For instance round up 31.8 inches to 32.
Under chest band size is the circumference of your chest under your breast, across your ribcage. For every odd number, add four inches and for every even number add 5.
Cup size is the diameter of your chest, around the breasts, taken together with breasts at their fullest part. Subtract your band size from the measurement of your chest including the breasts.
Chest size/ band size: cup size
7 inches: G
6 inches : F
5 inches : DD or E
4 inches: D
3 inches : C
2 inches: B
1 inches : A
If you do not fit well in your bra, adjust the straps or band hooks, if any, to see if you can accommodate some better.
Don't compromise with a size smaller or larger than your size. Try several bras, take out the time and do all that extra effort. Remember, that a bra affects your health and posture also.