First off, compared to two other Bali Comfort Revolution bras that I own, this runs small. Of course, given the way these are sized, it's hard to tell which size you really are (ironic as it is supposed to make figuring out your size easier). That said, it's just about perfect for me.
What is my correct bra size?
Measure loosely around the fullest part of your bust. Subtract the band size from this measurement. Use this number to determine your cup size according to the table below. Example: if your ribcage measurement is 31, and your bust measurement is 37, your bra size is a 34C: 31+3=34, so 34 is your band size.
How do I find my underwear size?
All you need is a soft tape measure! Bend to the sides to reveal the natural crease in your waistline. Wrap the tape measure around your waist where you typically wear your pants. This number, in inches, will give you your underwear size.
What size is an M?
Small (S) Medium (M)
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Inches 34-35 36-37
Centimetres 86-89 91-96