I’m 5’3”, small framed but on the curvy side since I’ve gained some weight. I weigh about 145-150 lbs now, and am a 34 DD to DDD CUP. The bust of the jumper has plenty of room, but I do wish the sleeves were a bit more loose and the rear end could be a little looser as well. I may order a large to see if that gives me the fit I’m looking for. That said, I’m still keeping the medium and plan to wear it soon!