I'm definitely a plus size 16/18 depending. I got the XL and couldn't be happier. It's not too roomy but not too tight either. I'm also happy with the way the cold shoulder hits. Sometimes you buy a cold shoulder top and you can see your bra strap hanging off or sliding. This is the right amount of coverage. Also, being a bit chunky, I like my shirts to hit a certain way. This one is slightly longer in the mid section and back, but scoops up around the hips creating an illusion which I like very much.
