Size 11. This is a 3-piece set consisting of a dress, a jacket, and a skirt. There is a thread coming out about 5cm below the back zipper of the dress. Please take care of this yourself after purchase. It can be worn in two patterns, for graduation and entrance ceremonies, so I think it will be useful. I don't see any noticeable fraying, but this is a personal inspection, so it is not perfect. I will sell it to someone who understands this.