1. Missy Elliott paid tribute to Aaliyah on the 20th anniversary of her death by sharing this photo of the late singer in the '90s, as well as writing a touching caption to her:
2. Amanda Seyfried posted these photos of herself, Lindsay Lohan, Lacey Chabert, and Amy Poehler doing karaoke during the filming of their classic movie, Mean Girls:
3. Sebastian Stan shared this photo of himself as a little kid in Romania in 1986:
4. Sting posted these photos of himself and Trudie Styler on their wedding day in honor of their 29th anniversary:
5. Kim Kardashian shared this video clip of herself, Khloé, and Kourtney lip-synching to Tiffany's "I Think We're Alone Now" as part of their audition for Star Search in the late '80s:
6. In celebration of her 32nd birthday, Trixie Mattel shared this photo of herself in the early '10s:
7. While Trixie's longtime BFF, Shea Couleé, shared this photo of the two of them together in the early '10s, in celebration of Trixie's birthday:
8. Taron Egerton posted this photo of himself holding a bunny in the '90s:
9. Ava DuVernay celebrated her 49th birthday by sharing photos of herself from throughout her life:
10. Cher posted this photo of herself with Joni Mitchell and Madonna at an Oscars party in 1998:
Back in the Good Ole Days.
11. Paris Hilton celebrated the 15th anniversary of her album, Paris, by sharing the artwork for it:
12. While Christina Aguilera celebrated the 22nd anniversary of her iconic self-titled debut album by sharing this clip that features scenes from the music video for it:
13. Kim Chi remembered Chi Chi DeVayne on the first anniversary of her death by sharing this photo of RuPaul's Drag Race Season 8's top four:
14. Claudia Schiffer posted this Vogue cover from 1992, where she was featured alongside her fellow supermodels like Naomi Campbell, Christy Turlington, Linda Evangelista, and Cindy Crawford:
15. While Naomi Campbell celebrated Claudia Schiffer's 51st birthday by sharing lots of photos of the two of them over the years:
16. Nicole Richie celebrated Sophia Richie's 23rd birthday by posting lots of photos of her from throughout her life:
17. Laura Dern shared photos of herself at the Sundance Film Festival throughout the years in honor of the organization's 40th anniversary:
18. Heidi Klum got excited knowing Halloween was just around the corner and reminded us of when she dressed like Jessica Rabbit in 2015 for her annual Halloween party:
19. In honor of Chris Pine's 41st birthday, Gal Gadot shared these behind-the-scenes photos of the two of them cracking up on the set of Wonder Woman 1984:
20. Ringo Starr paid tribute to Don Everly of the Everly Brothers — who died on Saturday at age 84 — by sharing this photo of the Beatles meeting the duo in the early '60s:
God bless Don and Phil the Everly brothers we loved them peace and love. 😎✌️🌟❤️🌈🎶☮️