"I tried this in the Deep Purple and Charcoal combo. I am 5'5" and 160lbs, I tried the Medium, because just by looking at it (in person) you can see it runs big. It's not so much a tee...it's a dress on me! But it actually looked really good. I tried a Small which fit me more like it does on the model shown (like a tee), but I liked it as a dress instead, so I stuck with the Medium. The Large was just TOO big and hit at my knees (which is too long for me), the Medium is about 3 inches above my knees and perfect. And the fabric is VERY soft. You might have to wear something underneath (like a bra or bandeau), because if not you might show a little side boob since the arm holes are a bit wide (unless you don't mind). I've already rocked these "dresses" in the warm Los Angeles spring weather and have gotten a lot of looks!"