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Pink, 2000 - Low denim jeans (with awful cutouts).

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Tara Reid, 2000 - Where to start? The body glitter, teeny belt, tube top paired with the blazer—all kinds of wrong.

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Cameron Diaz, 2001 - Tube top and boho skirt.

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Mýa, 2001 - Mýa managed to combine everything that was wrong with fashion at the time into one disastrous outfit. 

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Destiny's Child, 2001 - The queens of coordination. 

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Destiny's Child, 2001 - Matching...again. 

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Jessica Simpson, 2001 - The beetle wings.

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Cameron Diaz, 2001 - Berets were all the rage.

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Jennifer Lopez, 2001 - Velour tracksuits paired with heels was the decade's signature look. And just for good measure? Throw in a newsboy cap. What the hey! 

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Britney Spears and Justin Timberlake, 2001 - Who could forget this classic moment in fashion history? 

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Britney Spears and Justin Timberlake, 2002 - Newsboy cap and dresses over jeans. 

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NSYNC, 2002 - Bandannas and lots of denim.

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Kelly Clarkson, 2002 - The beret, dress over jeans, purposeless belts, and flared jeans to hide most of your chunky shoes.

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Kelly Clarkson, 2002 - Zebra highlights.

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Avril Lavigne, 2002 - Camouflage, visible underwear, and studded accessories.

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Gwen Stefani, 2002 - Let's not forget the dark lip liner trend that was happening.

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Kelly Clarkson, 2002 - Are those pants? A skirt? Or both? Anything was possible in those days.

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Paris Hilton, 2003 - As if jeans weren't low enough already.

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Britney Spears, 2003 - Were you even a part of the aughts if you didn't run errands in colorful velour tracksuits?

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Jessica Simpson, 2003 - Denim blazer and pink army pants with heeled leather boots? Why not?

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Beyoncé, 2003 - Not even Queen Bey was able to survive the corset phase. 

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Victoria and David Beckham, 2003 - White on white. Oh, and sparkles.

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Gwen Stefani, 2003 - Von Dutch trucker hats.

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Mary-Kate and Ashley, 2003 - Boot-cut jeans and cami tops. Plus, the beret, which no one could go without.

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Jessica Simpson, 2003 - Hot pink and glitter. 

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Gwen Stefani, 2003 - Proving that flashing underwear was not just for rappers. 

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Ashlee Simpson, 2003 - Scarves in warm weather because it's always best to be prepared. Hey, you never know when there might be a gust of wind, right? 

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Lindsay Lohan, 2003 - LiLo really embraced the trucker hats. 

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Lindsay Lohan, 2003 - What cool girl didn't try to replicate her signature look?

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Rachel Bilson, 2003 - Nobody escaped the asymmetrical skirt trend. 

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Nicole Richie, 2003 - Pink on pink and again, the pointless scarf.

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Nicole Richie, 2003 - Legwarmers made a huge comeback in the 2000s.

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Mischa Barton, 2004 - Asymmetry at its finest. 

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Paris Hilton, 2004 - Tutu, satin, and a mid-section belt. And let's add a butterfly hair accessory to top it off.

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Beyoncé, 2004 - Remember Uggs?

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Nicole Richie, 2004 - They were everything.

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Paris Hilton, 2004 - We also have Paris Hilton to thank for making the ruffled skirt trend happen. 

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Mischa Barton, 2004 - A ruffled skirt not good enough? Let's try a ruffled dress and wear it over pants.

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Nicole and Paris, 2004 - Can you handle all this baby pink?

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Ashley Tisdale, 2004 - Asymmetric dress and extreme color coordinating.

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Ashley Tisdale, 2004 - Camouflage skirt paired with an orange ribbon belt and some odd, pink, fur thing. What's not to love?

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Kelly Osbourne and Avril Lavigne, 2004 - Nothing screamed "I'm a rebel" more than adhering to the faux-punk trend.

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Hilary Duff, 2003 - Oh, the triple buckle belts. 

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Hilary Duff, 2003 - Pairing flared pants and pointy heels was the perfect combination if you were going for a formal-yet-relaxed look.

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Taraji P. Henson, 2004 - Boots with the fur and matching bag? Totally red-carpet appropriate.

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Rihanna, 2005 - Is that a necklace? A belt? Who knows...

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Fergie, 2005 -

Purposeless belts were key.

See also: Are these the worst-dressed male celebs of all time?

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