1. Ewan McGregor looked awesome while rocking Sting's Police-era haircut.
2. Mayim Bialik shared this photo of herself dressed up as a young C.C. Bloom on the set of Beaches. Now, I'm going to give you a moment to ugly cry.
3. Iman was disco glamour personified.
4. Outkast's Big Boi and André 3000 on the set of their very first photo shoot.
5. Carly Simon and Meryl Streep hanging out together 15 years ago.
With #Merylstreep back in 1999! #tbt
6. A teenage CeeLo Green hanging in his bedroom back in the day.
Still the same kid from Atlanta #TBT
7. Red Hot Chili Peppers' Flea and (the late) Hillel Slovak, both had epic early '80s hair.
#throwbackthursday #tbt Photo provided by James Slovak http://t.co/8k3Gn4LXJU
8. Awesome shot of Jon Cryer (DUCKIE 4EVA) and Molly Ringwald on the set of Pretty in Pink.
#tbt @MrJonCryer You are seriously Mick Jaggering it here.
9. Even at 17 years old, ANTM's Miss J knew how to give FACE.
#ThrowbackThursday to when I was 17 years old. What are your fave #MissJ throwback pics? (Pls be kind! ;)
10. So cute: This photo of Susan Sarandon.
First encounter with weed(s). #TBT
11. Hilary Duff rocked some serious early '00s fashion.
#tbt clearly this was a good fashion choice! #iwon not 1 not 2 not 3 not 4 not 5 but 6 hair chopsticks #winningat...
12. Rosario Dawson and her Kids co-star Chloë Sevigny were both chic in Versace.
Good throwback! #Versace with #ChloeSevigny “@Mr_A_N_Other: @rosariodawson #TBT ”
13. AWWWW, Jimmy Kimmel and his dad.
Baby Jimmy & his daddy. #Brooklyn #NY #ThrowbackThursday #tbt
14. A gorgeous photo of Madonna from her "Like A Prayer" photo shoot.
15. And finally, Ellen shared this photo of her and Lindsay Lohan from 2005.
This is from @LindsayLohan's appearance in 2005. She's back Monday. #ThrowbackThursday