1. Mandy Moore shared this photo of herself modeling Wet Seal clothing in 1999:
2. Kim Kardashian posted this photo of herself from the 2000s:
3. Tracee Ellis Ross gave us a throwback to her days on the '00s classic TV series Girlfriends:
Which #Girlfriends character were you? I was Joan 😂😂 #TBT
4. Mariah Carey shared this photo of herself on the red carpet at the 1997 MTV VMAs:
5. Mario Lopez questioned his outfit choices from when he appeared on the early-'80s TV series Kids Incorporated:
#TBT to “Kids Incorporated” days... Outfit questionable, dance moves on point tho
6. Dolly Parton gave us this pretty photo of herself from the '70s:
7. Reese Witherspoon posted this photo of herself from 1996, taken for her movie, Freeway:
8. Viola Davis shared this GIF of herself looking like a goddess:
Alexa, play Lady in Red 💃🏿 #TBT #Mood @TheWrap 🎥: @corinamarie19
9. In honor of Selma Blair's 47th birthday, her BFF Sarah Michelle Gellar posted this screengrab of the iconic kiss the two shared in their 1999 film, Cruel Intentions:
10. Michelle Pfeiffer remembered when she played Elvira Hancock in 1983's Scarface, and shared this photo from the film of herself and her co-star Al Pacino:
11. Lin-Manuel Miranda posted this video of himself performing "7 Years" in 2007:
#TBT 12 years after 7 years... https://t.co/ZiccyMV5Qx