I bought this from a luxury seller on Poshmark. I went to put it on this weekend and it was too big on me. The pit to pit is 17 and stretches to 22 inches. The length from top of strap to bottom is 23”. The top is extremely stretchy so it would definitely fit a medium also. The straps can sit on your shoulder or you can let them fall down if you would like, I’m very upset 😢 I never got a chance to wear this. It is perfect for the summer with some white pants, shorts, jeans, cute skirt the list can go on. It can be dressed up or you can dress down. The retail on was $228 and was on sale for $214.