I wear an 18-22 in pants and I bought the 4xl shaper. I wanted something to give me more of a 50s shape when I wear skirts and dresses and this shaper did it! The legs weren't too tight and I was able to get the whole thing snapped up, with a bit of effort. This is definitely easier to put on if you have help. It was surprisingly comfortable, and flattened my stomach without pinching. I was worried the straps would be too narrow at the sides, since I have a very large bust, but they were totally comfortable.