1. Lupita Nyong'o shared this sweet photo of herself and co-star Chadwick Boseman taken on the set of Black Panther.
2. Paul McCartney paid tribute to the late British comedian and fellow Liverpudlian, Ken Dodd, by posting this photo of the two of them (along with his fellow Beatles) hanging out together in the early '60s.
3. Halle Berry (right) shared this adorable photo of herself and her older sister, Heidi, in the late '60s.
4. Dolly Parton posted this dazzling and shimmery '80s pic.
5. Gus Kenworthy thirst-trapped for his #TBT.
6. Janet Jackson remembered her 2017 State of the World Tour.
7. Kevin Costner shared his 1990 Rolling Stone cover.
#TBT Comment if you had this @RollingStone cover in 1990!
8. Mark Ballas posted this oh-so-cute baby photo.
MARK BALLS...... 🔥 #tbt
9. Naomi Campbell shared this early modeling pic — proving she's been serving fierceness since she was a teenager.
10. Blondie posted this photo of Debbie Harry hanging out with fellow rock stars/icons Chrissie Hynde of The Pretenders, Pauline Black of The Selecter, Viv Albertine of The Slits, Siouxsie Sioux of Siouxsie and the Banshees, and Poly Styrene of X-Ray Spex in 1980.
11. Nina Dobrev remembered when she both saw Hamilton for the first time and got to hangout with Lin-Manuel Miranda.
#TBT to watching this brilliant show and meeting this super human (@Lin_Manuel) for the first time.