Gwen Stefani
The singer and The Voice coach attended Loara High School in Anaheim, California. We can't help but wonder if she spent a lot of her teen years at Disneyland!
Chrissy Teigen
A Reddit user who said they went to high school with the model posted this freshman year yearbook pic of her. Just look at that smile!
Leonardo DiCaprio
Whatcha' thinking abouot Leo?
Stephen Colbert
The late-night host showed an early knack for sharp dressing—just look at that tie!
Taylor Swift
We can't help but wonder if this was the origin story for "Teardrops On My Guitar"?
Blake Shelton
At Ada High School in Oklahoma, the country star was an adorable nerd...with a sweet mullet.
Kim Kardashian
Say cheese, Kim K!
Iggy Azalea
The "Fancy" rapper grew up in Australia and moved to America when she was just 16.
Jake Gyllenhaal
The 39-year-old attended Harvard-Westlake School in Los Angeles in 1998. The actor then went on to attend Columbia University and the rest of history.
Rob Lowe
The 56-year-old actor attended Oakwood Junior High School and Santa Monica High School. From the looks of it, he's always been a handsome fella.
Blac Chyna
The glamour model, who stepped out as Rob Kardashian's girlfriend in January 2016, posted on her Instagram page this yearbook pic showing her at age 17.
Adam Levine
The pride of Brentwood High.
Amy Adams
The actress attended Douglas County High School in Castle Rock, Colorado.
Natalie Portman
Look at this adorable baby pic of the Black Swan actress.
John Mulaney
Intentionally or not, the youngster showed his comedic timing early on.
Aidy Bryant
The SNL funny lady was just a smiling student back in the day.
Ed Helms
"That is not my hair," The Hangover actor said. "That is a golden retriever that sat on my head. That's insane."
Madonna
What a stunner!
Matt Damon
This looks like a scene out of Good Will Hunting.
Paris Hilton
The brand is strong with this one.
Justin Timberlake
The former NSYNC band member was so adorable to say the least.
Jennifer Garner
The young 13 Going on 30 actress attended George Washington High School in Charleston and then enrolled at Denison University in Ohio.
Garth Brooks
The 58-year-old probably had some luscious locks.
Peter Dinklage
The Game of Thrones star had some serious style back in the day.