1 How to Measure

Grab a soft measuring tape and wear a well-fitting, unpadded bra (or go braless) for the most accurate results.

Band size: Measure snugly around your ribcage, directly under your bust, right where a bra band would sit. Keep it level all the way around and snug, not tight. Round to the nearest whole number.

Right and Left breast measurement: Starting at the center of your chest (your breastbone), measure across the fullest part of that breast to the side of your body, roughly where the back clasp would meet halfway around your ribcage. Do this separately for each side. Since about 60% of women have some natural asymmetry, your two numbers may not match. That's expected, not a flaw.