Best friends, BFFs, Besties -- whatever you call them, Hollywood is filled with celebrities who are friends in real life.
From long-lasting relationships, like the one Ben Affleck and Matt Damon have, to newer friendships like the one between Katy Perry and Rihanna, some pals just don't let the fame game get in their way.
Sometimes, Hollywood actually helps stars grow close by throwing them into projects together, like "High School Musical" stars Zac Efron and Ashley Tisdale and former "SNL" cast mates Tina Fey and Amy Poehler.
Check out some photos of celebrity best friends below!
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