1. Pink arrived looking fierce and rocking that late ’90s cowboy hat trend.
2. While Melissa Joan Hart showed up wrapped in a sari.
4. Speaking of not smiling, Wilmer Valderrama looked like was he thrilled to be there, while his That’s ’70s Show co-star Mila Kunis looked adorable.
5. Ashton Kutcher looked like he came in his That ’70s Show character, Kelso.
7. America’s third favorite boy band, 98 Degrees, arrived in coordinating outfits.
8. Tatyana Ali looked pretty in lavender.
9. Alyson Hannigan looked like she was channeling Garbage’s Shirley Manson.
10. And she took a moment to pose with her American Pie co-star Jason Biggs.
11. Steven Tyler was there too (along with his Aerosmith bandmate Joe Perry), bringing “cool mom” vibes to the show.
12. While Freddie Prinze Jr. brought some goofy dad realness.
13. Christina Aguilera somehow managed to work both a large belly chain and pink pleather cheetah print skirt.
14. Monica sparkled (literally, she looks she rolled around in gold glitter).
15. While her “Boy Is Mine” duet partner, Brandy, looked chic in white.
16. Sandra Bullock and her then-boyfriend Matthew McConaughey were flirtatious backstage.
17. Tyra smized for her life.
18. TLC (or at least two-thirds of them) looked thrilled to be there.
19. Beverly Hills, 90210’s Luke Perry and Ian Ziering were probably there to receive a lifetime achievement award for playing teenagers for like 15 years.
20. Jennifer Lopez looked flawless (like always).
Also, how has J.Lo not aged in 15 years?!
21. Sarah Michelle Gellar looked kick ass (of course).
22. Tyrese zipped up his pants after almost flashing the camera.
23. Rachel Leigh Cook was all that.
25. Blink-182 brought the love.
26. While Britney Spears brought pink disco ball pants.
27. Jennifer Love Hewitt, the unofficial teen queen of 1999, showed up in every late ’90s girl’s dream prom dress.
28. And she reunited on the red carpet with LFO, whose video for “Girl on TV” she starred in.
Relive the magic (?) of “Girl On TV”:
- Bernie Sanders and Donald Trump have won the New Hampshire primaries for the Democratic and Republican nominations 🇺🇸
- The Supreme Court put on hold President Obama's climate change plan, which aims to curb carbon dioxide emissions from power plants.
- And thank the Force: Disney's profits hit an all-time high of $2.9 billion after the latest *Star Wars* film release ✨💰