How to Measure

Are You Wearing the Right Size?

Here are a few telltale signs that you may not be: wrinkling in the cups, underwire poking the sides of your breasts, a band that rides up, cup spillage, slipping straps, or a bra that hikes up when you lift your arms, says Sandi Simon, a fit consultant at Bra Smyth, in New York City. (Keep in mind that certain factors can cause you to change bra size: a weight gain or loss, a new exercise regimen, pregnancy, and a change of diet, among them.) If you suffer from any of the fit issues above, head to a professional bra fitter—or bust out the measuring tape and follow the steps here.

Step 1: Determine Your Band Size

While braless or wearing a non-padded bra, measure around the bottom of the band, directly under your bust. The measuring tape should be level and very snug. Round to the nearest whole number. If the number is even, add four inches. If it’s odd, add five. Your band size is the sum of this calculation. (So if you measured 32 inches, your band size is 36. If you measured 33 inches, your band size is 38.)

Step 2: Take Your Bust Measurement

Wrap the measuring tape somewhat loosely around the fullest part of your chest (at nipple level). Round to the nearest whole number.

Step 3: Calculate Your Cup Size

Subtract your band size from your bust measurement and refer to chart. Example: 37 inches (bust) – 34 inches (band) = 3 inches. That’s a 34C.