Reese Withersoon was an adorable dorky teen!

On a recent episode of The Late ShowNick Kroll dared Stephen Colbert to share an awkward photo of himself with the hashtags #PuberMe" and #PuertoRicorelief to raise awareness and money for the people of Puerto Rico after Hurricane Maria's destruction. Many celebrities also heeded the call, most recently Witherspoon.

The 41-year-old Oscar and Emmy winner posted on her Instagram page Friday a childhood photo showing her smiling while wearing thick glasses.

"Here you go @nickkroll... giant glasses, awkward hands, feeling 14! All for a good cause. God Bless Puerto Rico. #PuberMe #PuertoRicoRelief," she wrote.

Lance Bass, NSync, Instagram

Instagram

Backstreet Boys, Instagram, PuberMe Challenge

Instagram

Reese Witherspoon, PuberMe, Awkward Childhood Photo

Instagram

Conan O'Brien, PuberMe, Awkward Childhood Photo

Twitter

Lena Headey, PuberMe, Awkward Childhood Photo

Instagram

PuberMe Challenge

Instagram

Stephen Colbert, John Mulaney

Twitter

Lin-Manuel Miranda, PuberMe Challenge

Twitter

Busy Philipps, PuberMe Challenge

Twitter

Ryan Seacrest, PuberMe Challenge

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Kristin Chenoweth, PuberMe Challenge

Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram/Twitter

PuberMe Challenge

Instagram

PuberMe Challenge

Instagram

PuberMe Challenge

Instagram

PuberMe Challenge

Instagram

Stephen Colbert, John Mulaney

Twitter

Aidy Bryant, Amy Sedaris

Instagram

Aidy Bryant, Amy Sedaris

Instagram

Celebrity School Photos, Topher Grace, Andrew Rannells

Instagram

Celebrity School Photos, Topher Grace, Andrew Rannells

Instagram

Other stars who stepped up and posted hilariously awkward and adorable childhood photos include talk show hosts John Oliver, Jimmy Fallon, Samantha Bee and James Corden, Sarah Silverman, Busy Philipps, Lin-Manuel Miranda and America Ferrera.

Even Game of Thrones' Cersei Lannister got in the spirit.

"Trotting stylishly into the 80's ... WTF .." Lena Headey wrote on Instagram, alongside a photo of herself as a child on horseback.

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