Ordered a S. I'm 5ft about 135 lbs, I have a small waist and DDD breast and approximately 40inch hips. The dress fit perfectly, it had that thick stretch material that hugs you just enough to make a seamless line with the dress and your body. Meaning if you have cellulite you wouldn't be able to tell with this dress. The only downside for me is it looks a tab bit more brown than in the picture so it doesn't really pop against my complexion.

The dress fits amazing but once you started sitting it stretches and makes a wrinkle right on your stomach. Overall great dress