Figure out your cup size.
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Check the measurement. The number on the tape measure is your true bust, but for fitting bras you need to round to the nearest even number. So if your bust is 33 1/2 inches, round up to 34 inches. 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. So how can you tell if a particular style fits? Try these tips: Bend forward at the waist, then slip on the bra and hook it. This ensures your breasts are completely in the cups. Adjust the band. Measure just above your bust, right about where the straps meet the top of the cup. Enter this number in the Band Size box below. Tip: Odd number? Round down to the nearest even number. Your Bust Keeping the tape around your back at band level, measure at the fullest part of your bust.