All is Vanity

Imagine my surprise when I learned that men's wear manufacturers practiced vanity sizing! I had always labored under the (mistaken) belief that men's sizing was the last bastion of truth, and that a 36 waist meant a 36 waist, that Large was always Large no matter where one bought it, but au contraire!
Esquire Magazine has a very enlightening and amusing expose on men's vanity sizing.
It looks like Old Navy and Dockers are the worst offenders, I mean, flatterers. Last night my son and I were talking about sizes, and he said pretty soon, someone will introduce negative number sizes and then it will be a race to even lower numbers. You heard it here first.

Possible solutions to vanity sizing:
Color codes instead of numbers
No size at all, you would have to try everything on
Metric numbering
Sizes in Chinese dialects (since they make the clothes there anyway)

What solutions can you think of for the vanity sizing crisis?