I really like this shirt. I am 5’2” 128lbs, chest is about 36.5” waist is 28”. I did get a M because I didn’t want anything clingy when running. Woman’s cuts tend to squeeze my lats and shoulders. I’m probably a schmedium. This shirt in a medium was great! I wore it on a hot humid day. Wicked perfectly. Fabric is nice, soft and comfortable.