This dress is poorly designed. . As others noted, the inside flap on the top comes out during the night, but even worse than that is the fact that the pleats on the ruching are upside down. Its hard to explain, but the pleats open up because they are sewn upside down instead of lying flat. No matter how thin you are, the pleats come undone. Epic fail, but I guess you get what you pay for. I shouldve returned it like I originally planned.