2003: We got our first taste of the Jason Mraz fedora.
And the Britney Spears fedora.
2013: Now we get Taylor Swift's porkpie hats.
2003: That dark-hair-on-the-bottom look happened.
What is that even called? Reverse ombre? 2003 was a simpler time when no one ever used the word "ombre."
2013: The inverse: ombre hair.
Growing out your roots or trendy style choice? We'll never know.
2003: Kelly Clarkson had a tiny scarf.
2013: Scarves got bigger.
Sometimes a lot bigger.
2003: The trend of butt logos was beginning to blossom.
2013: It was hard to find a summer dress that didn't have a cutout.
Random patches of skin were at an all-time high.
2003: We just sat back and let velour sweatsuits happen.
2013: We sat back and let wedge sneakers happen.
2003: Hoop earrings were important.
Beyonce hoopin' it up in her "Baby Boy" video.
2013: Skater dresses were important.
2003: The lead singer of Train wore this nice shirt.
And Justin Timberlake demonstrated this classic everydude look.
2013: Everyone is in a contest to see how much plaid they can wear.
2003: Tall boots were high heeled and pointy, especially if you were going to kiss Madonna.
2013: Tall boots were flat.
Unless it was a wedge boot.
2003: The faux hawk.
And also faux mustaches.
2003: John Mayer and Justin Timberlake wore some nice, loose-fitting khaki pants.
2013: Fancy sweatshirts are a thing.
2003: Britney Spears wore this.
2013: Katy Perry wore this.
2003: Jeans with the faux crotch crinkles were all over the place.
2013: Peplums were all over the place.
2003: Denim miniskirts seemed like a good idea.
2013: High-waisted shorts seemed like a good idea.
Or did they?
2003: You might spot a Muppet coat.
2013: You still might spot a Muppet coat.
2003: Justin Timberlake wore this cool hat.
2013: Now he wears this hat.
2003: This Louis Vuitton bag everywhere.
2013: Chambray everywhere.
In 2003 this would be considered a dad shirt.