I am a size 4-6 and the medium fit perfectly with my base layers! The ski suit is so cute and comfortable! Our skiing was spring skiing (60°+) so I can’t speak on the warmth since I was warm the whole time!
It was super flattering and the bell bottoms had zippers for easy removal! I will note it does not zip all the way up and kinda folds like a collar but it’s super cute. I wore a scarf with it and it looked cute.