I have the same figure and in the winter I live in form-fitting tissue-thin cotton turtlenecks. That way when I wear a sweater, it doesn't itch at the neck or wrists, and if I go somewhere warm and take off my sweater, they flatter my figure. They were a lot more prevalent a few years ago, so now they're hard to find. I usually end up buying them on Poshmark. I think mine come from J Crew and Ann Taylor.