[MagnumPIG]

> cultural "requirement": clothing that is required to fit into social circles. The shirt would be a good example of this, aswell as the tie.

So... fashion?

[kazen44]

yes, it is fashion. But it has a far slower pace of change then the fashion industry. Formal attire for males got out of style a couple of decades ago, but besides the suit (and tie) mostly dying, most people still wear shirts to work.