I wear a size 3/4 in jeans and I ordered a small. The suit is neatly stitched and uses a high quality material. My main concern is that the top comes with large (roughly a 36 C), non-removable cups - I wear a 32 C so this ain't doin the trick for me. The upper half, in general, is very large. It looks and feels like I'm wearing small bottoms with a large top. If you have a very prominent inverted triangle body shape with a very long torso or you are willing to get alterations, then I recommended this suit!