Best of celeb #TBTs

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Thursdays are all about #TBTs, and your favorite celebs have been sharing their favorite memories like crazy. 

Check out the best #TBTs from your favorite stars! 

Ariana Grande as Ariana not-so-Grande:


Taylor Swift:

Kim Kardashian:

Kim & Kourtney Kardashian:

Kendall Jenner:

Demi Lovato:

Pete Wentz:


Miley Cyrus:

Ryan Seacrest - with Lucy Hale:

Hayley Williams:

Lena Dunham:


Tyler the Creator:

John Mayer:


CeeLo Green:

Snoop Dogg:

Selena Gomez:

Randy Jackson:


Julianne Hough:

Benji & Joel Madden:


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