1. Tom Holland shared this screengrab from 2017's Spider-Man: Homecoming to make a point about people who don't practice social distancing:
2. Will Smith posted this video clip from The Fresh Prince of Bel-Air to remind us that Will and Jazz were social distancing pioneers when it came to handshakes:
3. Aubrey Plaza celebrated National Siblings Day by sharing this photo of herself and her younger siblings in the '90s:
4. Barbra Streisand shared this photo taken in 1968 of herself and her Funny Girl co-star Omar Sharif:
5. Christina Aguilera posted this video of herself looking back at some of her most iconic looks:
6. Lin-Manuel Miranda remembered when he dressed up like J.Lo in 2000:
Me at 20, dressed like J.Lo. Dress by Middletown CT Goodwill. Julio, the Wesleyan Usnavi, as Ja behind me. #TBT
7. Robbie Amell participated in the #FirstPicChallenge and posted this photo of himself and his now-wife, Italia Ricci, during the filming of 2007's American Pie Presents: Beta House:
8. While Busy Philipps participated in Twitter's #MeAt20 challenge and posted this photo of herself from 1999, when she was on Freaks and Geeks:
Me at 20. Do I win something?
9. Cindy Crawford was in a springtime mood and shared this photo of herself on the runway of a Hervé Léger show in the early '90s:
10. In honor of Shannen Doherty's 49th birthday, Sarah Michelle Gellar posted this photo of the two of them at a party in 1999:
11. Nicole Kidman shared this photo of herself and Naomi Watts in the late '90s:
12. Natalie Portman posted this photo from her 2006 film Paris, je t'aime to sum up her quarantine:
13. Jonathan Van Ness shared this cute photo of himself in the early '90s holding his guinea pig, Peanut, that inspired him to write the kids book Peanut Goes for the Gold:
14. Kevin Bacon posted this photo of himself and his wife, Kyra Sedgwick, playing with their son Travis in 1989:
Been thinking a lot about family these days…. #tbt to a time of young marriage, a new baby and bad mullets.