Last year, James Fallows illustrated the growing girth of North American's by digging up photos from the 1950s of Jackie Gleason, Alfred Hitchcock, and Ramond Burr. Gleason was a notorious fatso. Hitchcock and Burr were celebrated symbols of portliness. None would draw a second look today. Now comes evidence that the shift in our perception of what constitutes fat has been getting a quiet nudge from pants manufacturers in the form of "vanity sizing." Abram Sauer, of Esquire's Style Blog, snuck a measuring tape into the change rooms of a series of men's retail chains and came back with this heartbreaking news...