Very cute Rebecca Taylor party dress as worn by celebrities. This is a size medium, which felt comfortable on me though I usually take a small. It made it less clingy in the skirt, which was a good thing in this color. But it is still form-fitting. I am typically a size 4-6 in dresses. The fabric is jersey with a little wool in it, but it’s very lightweight and could easily be worn in all but the hottest weather.