Stephen Colbert just gave celebrities a worthy reason to share all of their embarrassing school portraits. 

During The Late Show on Wednesday night, the comedian and his guest, Big Mouth star Nick Kroll, decided to launch a challenge in support of Puerto Rico in the aftermath of Hurricane Maria. 

"For every celebrity that puts up a puberty picture of when they're 13....I'll give a donation from AmeriCone Dream Ice Cream Fund," the host vowed. 

"I will match that," Kroll added. Of course, they couldn't start the challenge without joining in themselves, so the two shared awkward snaps of themselves from their teenage days. For Colbert, that meant a school portrait of himself in the photographer's suit jacket and tie because he had forgotten it was picture day.  

Fortunately for our entertainment, celebrities have started making their own contributions to the challenge, including Andrew RannellsAmy Sedaris and Aidy Bryant

Check out the snaps below along with more throwback photos of Hollywood's biggest names. Can you figure out which star is which? 

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

Twitter

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

Which throwback photo were you most surprised by? Sound off in the comments!

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