I think fashion is mostly a teenage thing...or a loser/skank's thing. When I was in high school, i got picked on for having "tight" pants, but now really tight pants is the style.
In college, I notice that style really meant very little. People judge you more on your ability to do good in school. After college and at work, fashion almost means nothing. If you dress decent, then that's cool. Once in a while, I bump into people who are still stuck on fashion. They seem to be stuck in high school, or they're losers/skanks.