– Band size: Circumference under the bust – Cup size: Circumference across the bust Step 1 MEASURE YOUR BAND SIZE To measure your band size, measure yourself at the bottom of the banded, directly under the bust. Your band size is the size of your bra band and is shown as a number in centimeters. step 2 MEASURE YOUR CUP SIZE Measure your bust across the widest part of your breasts, often above the nipple, to find your cup size. Hold the measuring tape loosely with straight around your bust. Feel free to stand in front of a mirror to check that the measuring tape is held correctly. 61 to 70 cm = 300g 71 to 80 cm = 300g 81 to 90 cm = 300g/550g 91 to 101 cm = 300g/550g 102 to 111 cm = 550g 112+ cm = 550g For complete mastectomy When there is no breast tissue left, it's up to you - choose the size you're comfortable with!