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. , Thu, 21 May 2020 09:37:41 +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.