I ordered this set as a Halloween Costume to dress up as a sexy vampire. When I initially tried it on I wasn't feeling it, but after hair and accessories it was a hit. I'm 5'4" petite frame. 27 waistline, 38C cup, weight 140lbs and I ordered an XS based on the stretch, I wanted it to be fitted tight because I'm not super tall. It's a full jumpsuit, velvet bodysuit separates and goes over the jumpsuit. Both had good stretch. I didn't think the velvet bodysuit was going to fit because I'm a little busty but it stretched all I had to do was adjust the straps to my breast sizing. My only problem was there was a hole in the back rear area upon receiving the item. The treading was coming undone. Had to sew it back together.