1. Michelle Trachtenberg shared this end-of-summer photo of herself with Kim Kardashian and Emmy Rossum that frankly belongs in a history textbook.
2. Common posted this AMAZING photo of Prince's badge when he was a mere opening act in 1980 — notice what the icon-in-the-making wrote in the "position" section!
That time when this young unknown artist opened for Rick James. Please look at what he wrote in the "position" sec… https://t.co/miQi0Lf382
3. Gillian Anderson shared this X-Files picture with an A+ Taylor Swift-inspired caption.
Sorry, the old Scully can't come to the phone right now... #tbt
4. Paul McCartney shared this pic of him monkeying around in London.
Paul hanging out in London. Photo by Linda McCartney #ThrowbackThursday #TBT
5. Josh Gad posted this super COOL photo of his first day recording Frozen.
#tbt This was the the very first recording I ever did for #Frozen
6. A few days late, but ahead of this year's New York Fashion Week, Karlie Kloss shared this throwback note celebrating a decade on the runway.
Thank you from the bottom of my heart to everyone that has been part of this wild ride. #TBT
7. Also in honor of Fashion Week, Tinashe shared this picture of herself with Moschino designer Jeremy Scott backstage.
#TBT with my guy @itsjeremyscott #NYFW
8. Kourtney Kardashian posted this super-fly photo of momager Kris Jenner — and a lot of people thought she looked ESPECIALLY like daughter Kendall!
9. Nick Kroll shared this hilarious middle school photo of him chilling with some babes.
#TBT this about sums up middle school: tiny me thinks I'm killing it, talking to a gaggle of bored girls while one… https://t.co/0oDtZfnExO
10. Yup, that's Pee-Wee Herman at a motorcycle rally in South Dakota in 2010!
Throwback to riding with Renegade Lorenzo Lamas in Sturgis Motorcycle Rally at The Buffalo Chip, South Dakota 2010… https://t.co/PcwUKDSUvb
11. In honor of this weekend's Emmys, Felicity Huffman shared this super cute clip of her and hubby imitating the award statue.
#tbt to @WilliamHMacy and I becoming one with the Emmy. Wonder what trouble we'll get into this year. #emmys… https://t.co/B1rxpOBQ8u
12. Ozzie Osbourne tossed things WAY back with son Jack — all the way to 1991!
with @JackOsbourne on November 18, 1991 in Hollywood, California. #tbt
13. And finally, Joseph Gordon-Levitt shared this blink-and-you'll-miss it screen shot of his cameo in Beethoven...he's on the right!
TBT to my big role in Beethoven #Imtheoneontheright