It's a black one-piece dress!! I've worn it about 3 times. I think I bought it at Shimamura. The size is S. For someone short, the length would probably be above the knee. I wore it with a belt at the waist. In my amateur opinion, there are no noticeable stains. Please refrain from purchasing if you are very particular. I will package it to prevent it from getting wet! ☆Instant purchase is OK