I bought two sizes xs
I bought two sizes xs and xxs I'm 5'1" 105 lbs petite frame. I liked the xxs as it fit well but you wouldn't be able to have anything thick on underneath like a sweater during the winter time for eg. but ok with a cardigan. I didn't want something that would drown my petite frame and I like that they have an option of xxs. I think the xs would've been fine too but just kept the xxs. The material of the coat is also great! not cheap feeling.