Im 53 and 110lbs and I ordered a small. It does fit about as expected based on the reviews and pictures. It does not look exactly like the dress on the model. Its a cheap material and reminds me of a costume. I got it to wear for my bachelorette party in Vegas and I think itll work for one night. As you can see in my picture, its see through, you can see my pink underwear underneath. The straps are really long so I think Im either going to have to pin them or have the dress altered, not sure yet. Overall, its a cheap dress thats cute and will probably be good for one night on the town.