Corsets are sized by waist size. So please choose your corset according to your waistline. not your bust. If your waist measurment is between two size, please choose the smaller size. , Sat, 28 Mar 2020 19:12:12 +0300 Corsets are sized by waist size. So please choose your corset according to your waistline. not your bust. If your waist measurment is between two size, please choose the smaller size.