You're right. I just remember that one time when I needed a dress shirt for a wedding. I tried this "slim fit" one because well, unfortunately I'm not exactly swole. My arms are not big and that shirt was tight, like it was bursting at the seams in the shoulder and arm area, but there was enough space in the gut for at least another half of me. It was so bizarre, who the fuck has that body type??? Tyrannosaurus was extinct last time I checked.  If that's the clothing for men they make, I can only imagine how hard it is to find a good shirt for women, especially one that would accommodate muscles and doesn't have a built in gunt space. My condolences.