Your bra size is made up of 2 parts, your frame size and your cup size.
Step 1Put on your best fitting unpadded bra. Measure tightly around the body, directly under the bust, making sure the tape is straight across back.
This is your frame size.
Step 2Measure directly across fullest part of the bust--with arms at sides and standing erect. Make sure the tape is straight. Subtract your frame size from this second measurement.
If Measurement Difference is Cup Size Is up to 1" larger than frame size
A
up to 2" larger than frame size
B
up to 3" larger than frame size
C
up to 4" larger than frame size
D
up to 5" larger than frame size
DD
up to 6" larger than frame size
F
up to 7" larger than frame size
FF
