I bought this tank top to wear under see-through tops. The tank is tight and slimming. I wanted something a little less slimming - I really just wanted a good, solid tank top. Overall I decided to keep the tank because it is well made. But I would recommend going up a size or two if you are not looking for 'slimming'. The tightness bothers me after a few hours. Also, it tends to 'ride up' the torso and won't stay tucked in (because it keeps climbing the torso). For reference I'm 5'4, 130 lbs, with an athletic build. I bought the small (and wish I would have bought the medium).