I'm a size 16, ordered the XXL. Sleeves are so tight, I can barely move my arms. There is an elastic waist meant to sit at, well, the waist; it ends up over my boobs. The fabric is also contricting, with no stretch, so I can't get away with it being smaller. Pretty disappointed, as I had heard great things about this dress on Buzzfeed and other internet sites. I would not recommned.