I bought this a few years ago, and I don't remember if I ever wore it, but I probably stored it without using it. The size is S. It's quite form-fitting. But it has some stretch. I bought this when I was around 154cm tall and weighed in the low 50s (kilograms). I've gained weight after having a baby, and the design isn't really for me anymore now that I'm in my forties, so it's just been sitting in my closet. I'm selling it to declutter. Please understand that this has been stored at home.