I heard about this website on TV: On http://www.exactitudes.com/ two photograpers from Rotterdam (Netherlands) document the dress codes of social groups. It's quite fascinating just how similar people tend to dress, who belong to the same social group/ age group/ have similar jobs/ a similar taste in music etc. - And often despite, or rather because they want to express individuality by means of what they wear! The impression of similarity is enforced by the fact that the people -people off the streets -are photographed in front of a white background and in identical poses.