I just got this dress and put it on. I am 5'6 and between 145-155 (that's a broad range but I always sit somewhere in there). Anyway I didn't even bother trying on the medium. The large fits like it was made for me. It's not too short. Though when I pulled it out of the bag I though for sure it would be. It comes about mid thigh on me. It is so amazing! The material is very giving and it feels too comfortable to look so great. Do not be fooled though. The bottom is almost black ( thought it was very dark blue but it really looks black). So you can do black heels. I would not reccomend light jewelery on top like the model has. It's way to light for as light as the top is. I went with some nice chunky dark blue jewelry which I think goes nicer with the dress. RENT THIS YOU WILL LOVE IT!!!!