Have you ever bought something from the website dresslily?

I was scrolling on Facebook the other day and an ad popped up showing some of the dresses and it said they were having a sale so I clicked on the link and I found 2 dresses and 1 lingerie outfit that I was thinking about buying. I was a little confused by the sizes though. I'm a pretty small woman but according to this website it says I should fit into an extra large or large and I find that very hard to believe since I usually fit into a small or medium.. I wouldn't mind if I could return the outfits if I found out they didn't fit but they won't let you do that. So I didn't know if anyone has bought from that website before and the fittings were right and everything was ok or not?