Most Helpful Girl
One piece underwear isn't the same as a corset. The main distinguishing aspect is that a corset shapes the torso into a particular shape. Which is why someone like Dita Von Tease has a very tiny waist, because she wore corsets that basically molded her body. Although, these days there are tops referred to as corsets because they share the same look without the function. One piece underwear doesn't mold the body at all.