I am not sure about what size to get. My...
I am not sure about what size to get. My upper body is tiny and I think a small would fit but I want to wear layers under it. Should I get a bigger size?
this is cut to be feminine and not too snug at the same time. there is a little extra length in the sleeve, a little extra room in the body and a little extra length to accommodate layers and movement. If a small is what you'd normally reach for, the idea of extra room is taken into account and you should be fine with it