Take a measuring tape and with your bra on, make two measurements. The first measurement is taken under your bust. Ensure the tape is even and snug around your body. Note the measurement in inches, rounding it off to the nearest number, e.g., 34.5 inches becomes 35 inches or 32.3 inches becomes 32 inches. If this number is odd, round up, e.g., 35” is rounded to 36”. You will use this measurement as your band size, as in 36C where the band is 36 inches. The 'C' represents the cup size, which comes from the second measurement step.
Secondly, measure over the fullest part of your bust and note this measurement in inches. Subtract the first measurement from the second. For example, if you got 39 inches as the second measurement, this gives a difference of 3 inches, which means your cup size is a C.
