Step 1: Measure Your Band Size (Underbust)

To find your band size, wrap a measuring tape snugly around your ribcage, directly under your bust. Pull it as tightly as you'd like your band to fit. Round this measurement to the nearest whole number.

- If the rounded number is even, add 4 inches.

- If it’s odd, add 5 inches.

This final sum is your band size.

Example: A measurement of 24.6 inches rounds up to 25. Adding 5 inches results in a band size of 30.

Step 2: Measure Your Bust/Cup Size (Overbust)

Next, wrap the tape around the fullest part of your bust, ensuring it's straight and sits comfortably without being too loose or too tight.

- Round this measurement to the nearest whole number if it includes a decimal.

- Example: A measurement of 84.5 cm would round up to 85 cm.

To determine your cup size, subtract your band size from your bust measurement. The difference will indicate your cup size as follows:

- A difference of 1 inch means your cup size is A.

- A difference of 2 inches means your cup size is B.

Example: If your bust measures 34 inches and your band size is 32, the difference is 2 inches, giving you a cup size of B. This would make your bra size 32B.