'90s Fashion: Jennifer Aniston, Will Smith, The Olsen Twins And 81 More Celebrities Who Weren't Always So Stylish (PHOTOS)

Winona Ryder, The Olsen Twins, Jennifer Aniston and Kate Winslet may grace our weekly Best-Dressed lists and Look Of The Day columns now, but they weren't always so fashionable. Same goes for the men who were popular in the '90s: Will Smith, Mark Wahlberg, Joseph Gordon-Levitt and every boy band. While stars from TV series like "Blossom," "My So Called Life," "Dawson's Creek," "Saved by the Bell" and "Boy Meets World" ruled the small screen, their personal style left much to be desired. Grunge, polyester, flannel, neon... what were we all thinking?

To celebrate (and reminisce about) the 1990s, we're taking a look back at some of the most awesomely nerd-tastic style moments from some of our favorite stars. Who do you think has changed the most?

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Awkward/Amazing '90s Style