Not fitted at all. For reference, I'm 5 feet 9 inches tall and weigh about 135 pounds. Athletic body but fairly muscular for those who rarely exercise. You can see my veins, well defined muscles, etc. I ordered a small and it's too big under the bust like someone else said this shirt is for a beer belly. Fully buttoned I can stretch this shirt 6-7 inches from the waist. Again, it's not tight-fitting at all. The sleeves are also a bit long. Very, very thick/heavy shirt. the shirt has a very good material quality, but as I said it is far from skin-tight. Parts of the world would probably like it.