A few quick steps to help you find your right fit. Because FIT MATTERS.
1. Measure your under bust where your bra band sits on your ribs. Hold the measuring tape parallel to the floor and snug but not too tight to the body. If your measurement is an odd number round up to the nearest even number for your band size. So, if you measure 31" round up to 32".
2. MEASURE YOUR RIGHT BUST CUP SIZE. While wearing a non-padded bra, measure your right bust at the apex/most full point only from the center of your back to the center of your front chest. You may need someone to help you hold the tape measure on your back. Hold the measuring tape parallel to the floor and straight across your bust to the center of your bra. Do not curve the tape measure over your bust. Double this measurement. (17.5" x 2 = 35")
3. Subtract your under bust body measurement from your right side bust measurement doubled. (31" - 35" = 4") Find your right side cup size using the chart below based on the difference between under bust and bust measurement.
4. Repeat steps 2 and 3 on the left side to determine your left cup size.