I'm not sure what size this originally was, but the measurements shown are what it currently is now as I took it in. I'm guessing it may have been a 1X, but again, I'm not sure. You can let it out and get more room out of it if you'd like. There is some slight discoloration around the underarms; it was like that when I got it and I did my best to get as much of it out as I could. This item comes from a smoke-free, dog friendly home. It might be wrinkled due to being in storage!