I'm a 5'4" short female, 125 lbs. Found these shirts at a work fair but smallest size was a large: way too big for me but came in handy in the winter when I still wore them but with a long-sleeve underscrub tee. Happy to have found smaller sizes on Amazon but the XS size I got was too "fitting" in the rear. This style is meant to be loose, especially if worn with baggy pants. So, I have just bought more colors in small and medium sizes. Because of the location/type of the pattern in the front, small-chested women can get by without constrictive bras during summer.