I wore this once for cosplay. It's knee-length. The size is XS (see image 4). It's an American/European size, so it runs large. I usually wear S-M and it fit me without any problems. I'll also include a ribbon made from a different fabric with the same pattern. If you'd like, I'll also include the collar I wore underneath (see image 5). Purchase price was about 3,000 yen. Dressystar Retro Dress 50s Rockabilly Dress Swing Dress with Belt Ladies Party Dress Casual Spring Summer Color...Red Pattern...Dot Silhouette...Flare Season...All Season