A - BUST SIZE
Measure around the fullest part of your bust, being careful not to tighten.
Measure your waist horizontally around the waistline, halfway between the lower ribs and the hip bone. For a more precise measurement, breathe deeply, relax your stomach and wrap the measuring tape around your waist so you can fit a finger between the tape and your waist.
C - HIPS
Measure your hips at their widest point: about two centimeters below the hip bone
D - LEG LENGTH
Stand up straight in sports shoes and keep your feet slightly apart in alignment with your shoulders. Measure the length from the top of your thigh to your ankle (or the calf for crop pants). You can also take the measurement on the side of a pair of your own pants.
E - SHOULDER / CROTCH / SHOULDER
Take this measurement to choose the size of your leotard. Start from the top of one shoulder, go down to the crotch between your legs, and back up to the same shoulder. Measure the total length.