I bought my first one of these last year (size Sm) in a larger navy stripe which I love, but every time I wear it I'm reminded that it feels a bit oversized. So I bought the Wave Rugby Stripe during this year's sale in size XS and I like the fit of that much better. For comparison, I am 5'6", 145 lbs, 36A bust and 31.5" waist - I am almost never an XS anywhere else. I prefer clothes that are big/loungy rather than anything tight, but I believe there is a "too big" too and with many of Carve Designs tops styles getting boxier, I've found myself wearing XS more often. The fabric of this top is spongy in density and surprisingly warm without being too thick or dense, and very comfortable. Now I just need CD to make this in some solid colors: the gray from last year, a dusky blue/gray or a pretty maroon would be perfect.