Really love the way this dress fits my hourglass figure. I have big boobs and round hips, so if I don't accentuate my waist then I just look like a blob. I initially got a Large b/c of the size chart. My bust is a 34F, so it measures about 40\" around. And my hips are 45\" around the butt, and my waist is 28/29\". So, I got the L and it was way too big. It didn't lay flat in the back, and couldn't cinch enough in the front. So I exchanged for an M, which fits much better but I still feel like overtime it'll stretch out so I'm considering maybe getting a Small for comparison. I think it depends on the kind of figure you've got and what you're trying to hide/accentuate. This dress is very stretchy around the bust and hips, so if those are your only areas of concern, you can size down for sure. Also, I'm 5'6\" and the dress is just short enough to be sexy but not to the point where I can't sit down.
I actually love that this dress doesn't have a lining. I ordered a nearly identical dress from another company, one that did have lining, and the lining totally ruined the drape. This is way better, and breathes better too.