I tried this on in the store and loved it. it runs large. i'm 5'7", 130lbs, very short waisted, and i got the xs. i realized it had a sheer section on the side, but the store paired it with a beautiful scarf that helped cover the sheerness. i didn't feel i needed a cami while wearing the scarf. plus the scarf will keep me warmer and let me wear the shirt a little longer in the fall.