I purchased this from SHEIN a few years ago. It's labeled Teen 12-13, but it was actually longer than I expected, so the size didn't fit. I'm selling it. I think it's about the length of a regular size M. I haven't worn it at all except for trying it on, so I don't see any stains. Please understand that this is a personal inspection and storage. If you have any questions, feel free to ask.