1. By the looks of this photo, January Jones (in the yellow dress) was probably the Regina George of her high school.
2. Justin Timberlake was an adorable little leaguer.
3. Alicia Keys shared this sexy and fierce photo of herself.
4. Former America's Next Top Model judge, Nigel Barker, took us back to 1994 -- when he had hair!
My lovely Crissy and me 20 years ago on our way to meet my folks on the train for the 1st time #throwbackthursday
5. Cindy Crawford clearly had a hot summer day on her mind when she picked out this TBT photo:
6. Late Night shared this photo of Seth Meyers kinda dressed like a manager at the Gap circa late '90s.
#TBT: Seth and his comedy partner Jill Benjamin are totally 90s. Find out what Seth hates about this photo tonight!
7. Chris Meloni looks like he might have been unbuttoning his pants in this photo!
#TBT: Rockin' the V-neck & uh buttoning my pants? Did they retouch my face & give me a clef chin? Smh
8. Jenna von Oÿ (aka Six!!!) reminded us of that "very special" (weren't they always "very special"?) Blossom episode when they went to Paris.
We'll always have Paris... & reruns on @HubTVNetwork! #tbt #throwbackthursday @missmayim @joeylawrence @melissashares
9. This photo of The Bangles' Susanna Hoffs hanging out with Duran Duran's John Taylor is '80s music perfection!
La dolce vita--San Remo, 1987 with @thisistherealJT! #throwbackthursday
10. Speaking of the '80s, here's The Real Housewives of Beverly Hills' Kim Richards with her sister Kyle looking, well, very '80s!
11. Bryan Greenberg shared this photo of himself hanging out with his fellow One Tree Hill co-star, James Lafferty, back in the day.
My OTH days with my boy @ThisIsLafferty at his basketball charity game in Wilmington NC. #TBT