Measure around your chest at the fullest point of your bra cup. Do not pull too tight.
Measure around the ribcage right under the bust, usually where the band of your bra would sit
Measure around the smallest part of your waistline with one finger between your body and the measuring tape.
Stand with your heels together, keeping the tape straight and parallel to the floor, measure over the hip bone and under the love handles.
Stand with your heels together, keeping tape straight and parallel to the floor. Measure around the fullest part of your hips over your bottom.