I'm 5'1, 117lbs and I'm usually between small and xs. The size charts are so useless here if you fall between sizes. For reference my measurements are Bust: 35.5", Waist: 26", Hips: 37", Bra Size: 30F... I got a small but the waist was too loose so it just dropped and gave no shape from the waist down. The material is stretchy and the color is nice, just wish I had with with an xs for this. Not sure if its worth keeping. The quality is OK... nothing to write home about.

it was true to size. Thick material, and hugs the waist. Got lots of compliments.