It's hard to believe it's been 40 years since the hilarity of "Animal House" played out on the big screen. But July 28, 2018, marks the film's big anniversary, and in honor of that milestone, Wonderwall.com is taking a look at celebrities who had their own "Animal House" experiences in college by going Greek! From sorority sisters to fraternity brothers, we're taking a look at the famous faces who were pledges in college…
The ladies at the University of Missouri in the early '80s were certainly lucky! One William Bradley Pitt — later known in Hollywood as Brad Pitt — attended college there, where he was a Sigma Chi.
Doesn't Jennifer Garner seem like a perfect sorority sister? We think so! The star was a Pi Beta Phi during her days at Denison University.
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Will Ferrell probably picked up plenty of comedic material during his days as a Delta Tau Delta at the University of Southern California!
At Oklahoma's Northeastern State University, one of the Sigma Sigma Sigma girls was destined for fame. Her name? Carrie Underwood!
He may play a nerd on TV, but Jim Parsons was a fraternity guy on the University of Houston campus! He called the men of Pi Kappa Alpha brothers.
Once upon a time, a Northwestern University student named Julia Louis-Dreyfus rushed sororities and ended up joining Delta Gamma!
Picture this — a young Matthew McConaughey at the University of Texas at Austin. Would he be a frat guy? You betcha! Matthew was a proud Delta Tau Delta.
In the late '70s, Michelle Pfeiffer studied at Golden West College where she decided to rush the sorority Alpha Delta Pi.
We could definitely see Paul Rudd as a frat bro! The actor was a Sigma Nu at the University of Kansas.
David Schwimmer was a Delta Tau Delta! He joined the fraternity while studying at Northwestern University.
During Heather Locklear's days as a UCLA Bruin, she called the ladies of Chi Omega her sisters.
Who calls the men of Delta Chi brothers? Ashton Kutcher! He pledged at the University of Iowa.
Did you know Jenna Dewan attended the University of Southern California? Besides being a Trojan, she was also a Pi Beta Phi in college.
After attending the University of Oregon, this Sigma Chi would go to become a television superstar. His name? Ty Burrell!
Math whiz Danica McKellar attended UCLA where she pledged the sorority Alpha Delta Pi.
Ripon College's Sigma Nu has quite a famous member among its ranks! It's none other than Harrison Ford, who pledged in the early '60s.
Representing the Gamma Phi Betas? Kristin Chenoweth, who joined the sorority at Oklahoma City University.
Before he was a famous country crooner, Luke Bryan was a member of Sigma Chi at Georgia Southern University.
Lucy Liu went Chi Omega! The star rushed the sorority while studying at the University of Michigan.
Jon Hamm attended the University of Texas where he joined the brotherhood of Sigma Nu.
During Connie Britton's time at Dartmouth University, the future star rushed and became a Sigma Kappa.
In the '70s, Kevin Costner studied at California State University Fullerton, where he became a member of the Delta Chi fraternity.
Patricia Heaton attended Ohio State University where she pledged Delta Gamma.
What would Cam say? Eric Stonestreet joined Pi Kappa Alpha while studying at Kansas State University.
Sophia Bush is a Kappa! The star attended the University of Southern California where she was a proud Kappa Kappa Gamma.
Oklahoma State University at Stillwater has a famous Delta Tau Delta alum — actor James Marsden!
Mariska Hargitay was once a UCLA undergrad who rushed and ultimately joined the ladies of Kappa Kappa Gamma.
Long before he joined 98 Degrees, Nick Lachey joined Sigma Alpha Epsilon during his time at Ohio's Miami University.
Another star proudly wearing the Kappa Kappa Gamma letters? Ashley Judd, who joined the sorority at the University of Kentucky.
Jeremy Piven pledged Pi Kappa Alpha while enrolled at Drake University.
When Kimberly Williams went to school at Northwestern University, she ended up pledging Alpha Phi!
One famous brother from the University of Louisiana at Monroe chapter of Pi Kappa Alpha? Country legend Tim McGraw!
Model Molly Sims was a Tri Delt! The star was a part of the Delta Delta Delta sorority at Vanderbilt University.
But did he have the mustache back then? Tom Selleck was a Sigma Chi at the University of Southern California.
Another proud Delta Delta Delta! Elizabeth Banks was a Tri Delt during her time at the University of Pennsylvania.
Not only was Harry Hamlin a Delta Kappa Epsilon during his University of California, Berkeley days — he served as the fraternity's president!
Way before her reality television days, Aubrey O'Day attended the University of California, Irvine where she joined Alpha Chi Omega.
Jason Lewis attended school at sunny San Diego State University where he joined Delta Upsilon.
Long before Sheryl Crow's songs played on the radio, the singer pledged Kappa Alpha Theta at the University of Missouri.
Comedy star Will Forte must have really entertained his fellow Lambda Chi Alpha brothers! He rushed the fraternity during his time at UCLA.
Between attending classes at the University of California, Riverside, Jamie Chung spent her time at the Kappa Kappa Gamma house.
SAE representing! Dierks Bentley pledged Sigma Alpha Epsilon at the University of Vermont.
Florida State University alum JoAnna Garcia pledged allegiance to Delta Delta Delta during her college days.