Mean Girls - 2004

Paramount Pictures

It's hard to believe, but it's been 15 years since Tina Fey took us inside the animalistic and downright hilarious world of teenage girls. But while fetch may never happen, Mean Girls did.

And ever since the teen comedy's debut on April 30, 2004, we've been totally obsessed with the grool—that's great and cool, duh—movie. It proved how funny Lindsay Lohan could truly be, launched the careers of future superstars Rachel McAdams and Amanda Seyfried, introduced us to Jonathan Bennett (whose hair still totally looks sexy pushed back), had us wondering if butter is a carb, gave Ariana Grande something to spoof in her "thank u, next" video and us something to endlessly quote ad nauseam.

Hell, it even turned the once-forgettable date of October 3rd into a holiday in its own right. Why? Because that's what day it was when Aaron Samuels asked Cady Haron what day it was, duh.

So break out your burn book, crank up the Ladysmith Black Mambazo, unwrap a few Kalteen Bars and join us as we celebrate 15 years of Mean Girls with 15 totally fetch facts about one of the internet's favorite movies!

Mean Girls, Lindsay Lohan

Paramount Pictures

Rachel McAdams, Mean Girls

Facebook/Paramount Pictures

Mean Girls Halloween Costume

Mean Girls, Tim Meadows, Amy Poehler

Paramount Pictures

Mean Girls, Rajiv Surendra

Paramount Pictures

Mean Girls, Rachel McAdams

Paramount Pictures

Mean Girls

Paramount Pictures

James Franco, Today

Zach Pagano/NBC

Mean Girls, Jonathan Bennett, Jimmy Fallon

Paramount Pictures; Kristina Bumphrey/Starpix/REX/Shutterstock

Mean Girls, Tina Fey

Paramount Pictures

Mean Girls, Glen Coco

Paramount PIctures

Tina Fey, 2010 Met Gala

Larry Busacca/Getty Images

Funny Gals, Funniest Moments, Amy Poehler, Mean Girls

Paramount Pictures

Daniel Franzese

Moviestore Collection/Rex/REX USA

Tina Fey

Dia Dipasupil/Getty Images

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