I ordered a M/L and I'd have to say the fit was pretty good I'm 5 foot 7 inches and around 165lbs. My bust is between a 38D and a 36DD. The material was pretty cheap and was not what I expected. It was thin as well. It felt like one of those tank tops you buy to wear under your shirts. I do not think it was thin enough to be see through it. I only wore it twice it has washed pretty well. I did like it a lot. It was very comfortable but I did feel like I had to wear a lot under to feel completely together. I felt like a lot of my back was out for some reason, I don't know lol. It took about 2 weeks to come which wasn't bad considering shopping was free. Overall, it wasn't a bad purchase but I probably wouldn't purchase it again. The style is nice so I would probably buy something like it again just not this specific one.
PS. The white spots are paint from Jouvert/ the Labor Day Parade!!! The dress didn't not come with those spots.
If you're long in the torso or bottom heavy order up from what you usually wear. It's stretchy so it should be fine in the top, but it slinks up around the butt on mee.. I have a long torso and am more bottom heavy