I'm 4'11, 110 lbs, and usually wear xs and s, but I ordered a L/XL and it fit perfectly! The sleeve were a little short but it didn't matter since i'd style it with the sleeves rolled. It is a shirt, not a sweater! The grey looking sweater material you can see ends on the sleeves, it's quite thin. Some threads were hanging off but nothing major. No zipper, has buttons! Came in a decent amount of time! It fit, it was cute, I am happy!