I’m 5’5” 129lbs and small is my usual size. I bought a med bc I knew the skirt was very mini so the bottoms fit great even tho it was still so short but the top was so large. The top is shaped like it’s made for larger breasts. The circumference of the top of the bandeau is larger than the bottom of the bandeau. very odd. if you have a bigger chest this may be for you.