How To Measure
Wrap a measuring tape around your body at the fullest part of your breasts.
Use the tape to circle your waist (sort of like a belt would) at your natural waistline, which is located above your belly button and below your rib cage. (If you bend to the side, the crease that forms is your natural waistline.)
Remove your outer garments, put your feet together, and wrap a soft measuring tape straight and snug around the widest part of your hips.