this is simply the cutest jacket, ever! i highly recommend it. sizing wise, i'm 5'4, 120 pounds and the size S fits perfectly. my waist is 26" and there is still plenty of room in the body of the jacket for layering. the sleeves are also roomy enough for a heavy weight thermal top. i also have broad swimmer's shoulders, but there's enough room in the size S. the best part is, the faux fur hood feels so nice and the cut of the jacket looks really slimming! and it's so well made. i can imagine wearing it on a night out in town and not looking out of place, like i'm wearing a "mountain jacket".