1. In celebration of the release of Justin Bieber's new album, Changes, Billie Eilish shared some photos from when she was a die-hard Belieber in the early '10s:
2. Jennifer Lopez celebrated the 18th anniversary of her remixes album, J to tha L–O! The Remixes:
3. A-Rod shared this photo of himself and Derek Jeter in 1994:
4. Lily Collins gave us a #TBT of herself in Paris:
5. In honor of Valentine's Day, Hillary Clinton shared this photo of herself and Bill in the '70s:
6. While Jennifer Garner posted this clip from her 2010 movie, Valentine's Day, in honor of the holiday:
7. As part of MTV's #PromChallenge, Tracee Ellis Ross posted these photos of herself right before heading to prom in 1990:
8. Michelle Obama also participated in the #PromChallenge by sharing her prom photo from 1982:
9. Rachel Zoe posted this photo of herself from her wedding day in 1996:
10. Sam Claflin remembered his The Hunger Games: Catching Fire co-star, Lynn Cohen, who died at age 86 last week:
11. While Janet Jackson remembered her friend and Good Times co-star, Ja'Net DuBois, who died earlier this week at age 74, by sharing some photos of them from throughout the years:
12. In honor of Sidney Poitier's 93rd birthday, Barbra Streisand shared this photo of herself, Sidney, and Paul Newman from when they announced the formation of their production company, First Artists, in 1969:
13. Legendary rock photographer Mick Rock posted this photo he took of Bono and Lady Gaga in 2009:
14. Natalie Portman shared this photo of herself in 1995 that was taken during a photo shoot for Seventeen magazine:
15. And finally, Alex Winter shared a BUNCH of behind-the-scenes photos of himself and Keanu Reeves on the set of Bill & Ted's Excellent Adventure in 1988:
I found an old hard drive with a bunch of BTS shots from Bill & Ted 1. These are from the opening dance number (yes an actual, choreographed rock jam) and face off with the jocks at the bus stop that didn’t make it into the movie: