Well, in this crowd I'm an old, half-crippled up, skinny arse geek. I go 5"9 and 150 lbs. I can conceal and carry a 5" steel 1911 or a 4" N-frame if it's below 55 degrees outside. Long pants, real belt, jacket or sweatshirt.
When it gets above 65 or 70 and the wardrobe changes, it's time to downsize. I carried my Kahr P45 all last summer, including shorts and t-shirt Texas weather. I will be trying to carry a 3' or 4" alloy 1911 thsi summer...we'll see how that goes.