This fits true to size, I usually go between a small or medium in Athleta. For fitted shirts like this one I usually go medium which was the size I ordered. It fit well minus the neck was pretty snug, to the point that it was making me look odd. ( I don't have an abnormally large neck) The top has a nice length, not too long but not super cropped either. Would be cute with some joggers. I liked the idea of the top but ended up returning it.