How to measure bra size

Learning how to measure for a bra cup and understanding bra and sizes is essential for finding your perfect fit.

To measure your bra size, you'll need a soft tape measure. First, measure your band size by wrapping the tape measure snugly around your rib cage directly under your bust, making sure it's level all the way around. Then, for your bust measurement, measure around the fullest part of your bust. These two measurements will help determine your bra size.

At Thirdlove, we're dedicated to helping you find the most comfortable and supportive bra possible. Our comprehensive Bra Size Calculator provides both an easy calculator as well as step-by-step instructions on how to measure yourself at home. For an even more personalized recommendation, try our innovative Fit Finder® quiz, which has helped millions of women find their true size, including our exclusive half-cup options.