I am 120 lbs, and have a 34 inch bust and a 38 inch waist, and I am 5’1”.
I fit into the small. Not sure if it will shrink though. If fits exact. I’ll probably wash it in cold water and hang dry it. It’s almost like t-shirt material, but a bit softer and a bit stretchier. It’s pretty wrinkle free as well. Will work for travel, which is the main reason why I got it.
I think a medium might have been better though. Can’t let this shrink or gain even a little weight, or even have a day where I am bloated lol.