I am 5'3 and about 120lbs and am normally anywhere from a small to a medium in tops. I ordered a size S/M and received a medium and it fits just right. it came in before the estimated arrival date so that was a plus! the shirt fits like a longer crop top but still very cute! the material wrinkles easily but if you just throw it in the dryer it should be fine! the material is also very see through, but if you just wear a bandeau under it you should be fine! overall I'm very pleased with my purchase!