Measure at the fullest part of your chest. Stand naturally with your heels together and arms resting by the side of your body. Position the tape so that it covers the widest part of the back, around the shoulder blades, under the armpits and over the fullest part of the chest.
Place your hand at your natural waistline and position the tape here. If you cannot find your natural waist, stand with feet slightly apart and bend to the side. Your natural waist is where your waist will crease.
Stand naturally with your heels together in a relaxed pose. Measure with the tape around the fullest part of the hips. Do not pull the tape tight.