I'm an xl in retailer blouses, and this blouse is the same. i'm guessing women with a thin frame might size down, but i can't say for sure. i purchased the white blouse with the floral pattern. there is a narrow band on the bottom, but it isn't tight, so i didn't find it to be a problem. i usually don't like blouses with banded bottoms, but this is loose. the band does cause the blouse to blouse out a bit, but the fabric has a really nice drape to it, so it worked fine. the fabric has a gre