It has happened to all of us: You find the ideal dress for a certain occasion, but you're at a loss for what shapewear to wear underneath. That problem is non-existent when you buy a dress that already has shapewear built into it. The upside is that you don't have to worry about the shapewear you already have working with the dress. After all, a high slit can nix your undergarments in an instant! Since the shapewear was specifically designed to work with these dresses, your body will be slimmed out and your curves will become your favorite accessory for the day or night.