|If Shapewear item is sized by Bra size you should purchase the item in your regular bra size. As long as your hip measurement is not more than 4 inches larger than your bust measurement the item should fit. If your hip measurement is more than 4 inches larger than your bust you should go up a size, and down a cup size.|
Girdles in general are sized by waist measurement. Sizing is very difficult to measure on the item as the fit is determined by the "stretch" of the garment. In general if your hips are not more than 4 inches larger than your bust you should have no problem with the fit if you purchase the item by your true waist measurement.