I'm 5'6.5\", 38\" bust and 36\" waist and I ordered Large which fit. This is a smocked, empire waist dress and the skirt is one piece with just a bottom ruffle, I really think this is more flattering than the one's with 3 ruffle layers. The neckline is a flattering V and the back does not go down very far. You can dress this up or not, wear a belt etc. It flows nicely as you walk and the sleeves are airy, with a butterfly flutter style. It comes wrinkled but you can either steam it, or give it a few minutes on tumble and the wrinkles come out. I recommend this dress!