I am 5’5” and 145lbs, small chested, and the L actually fits me just the way I prefer. I think an M would have felt too constricting. It’s a beautiful sweater, very high quality. I have not washed it yet- always the terrifying part- but I plan to be excessively gentle with it. Feels like the kind of item that could last forever if cared for properly. Well worth the investment.