1. Pee-wee Herman posted a photo of himself and Cowboy Curtis (aka Laurence Fishburne) on the set of Pee-Wee's Playhouse.
2. Lupita Nyong'o posted this cute photo of herself at age 14.
3. Speaking of cute, Mandy Moore shared this photo from her ballerina days.
4. Hillary Clinton posted this adorable photo of herself out for a ride.
A never-seen-before-today #tbt: Pedal to the metal.
5. Mariah Carey celebrated the 25th anniversary of her debut album, Mariah Carey.
6. Mia Farrow shared this photo of herself and the legendary Carol Burnett on the set of their 1978 film A Wedding.
When Carol Burnett was my mom, Lillian Gish my grandma in Altman's 'A Wedding' #TBT
7. Barbra Streisand took us back to the 1969 premiere of her film Hello, Dolly!, where she posed with her co-star, the iconic Louis Armstrong, on the red carpet.
8. Cindy Crawford took us to the early '90s, when apparently thong bodysuits were all the rage.
9. And finally, Tom Hanks took us back to 1974, when he had some enviable Breck Girl hair.
If you looked like this in ‘74 #SeventiesCNN is your story & American History. Dig the hair. HANX. #TBT Watch premie… http://t.co/3bRTKEYG6Y