How to measure your bra size (Note: Measurements should be made on skin, not over clothing):
1. First measure around your body directly under the bust, this will give you the underbust measurement. Refer to chart 1 to determine your correct back size.
2.Measure around your body over the fullest part of your bust - this will give you the overbust measurement.
3.Calculate the difference between this overbust measurement and your underbust measurement.
Refer to chart 2 to determine your correct cup size.