Stand up straight, relax and take deep breath with hands down at your side. The chest measurement should be taken around the chest under the armpits. Make sure the tape is parallel and you can move the tape easily. Do not tighten the tape measure. Avoid having thick clothes on when measuring.

Measure around the widest part of your bust. Let loose so that you can put a finger between your body and the tape. Make sure that the tape is at an even height all the way around.