Celeb Best Friends - LEAD
Credit: Jon Kopaloff/FilmMagic

Hollywood—the place where romantic relationships come and go, and celebrity friendships last a lifetime. Well, maybe not each and every friendship, but at least a fair share have stood the test of time.

Dynamic duos like Ben Affleck and Matt Damon, Tina Fey and Amy Poehler, and Jennifer Aniston and Courteney Cox have been friends for many decades, while pairs like Taylor Swift and Selena Gomez, Kendall Jenner and Gigi Hadid, and Reese Witherspoon and Sofía Vergara have become close in more recent years.

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But just how did all these pals meet? Many of these stars bonded on movie and TV sets (like Michelle Williams and Busy Philipps), while some grew up together in the business (like Leonardo DiCaprio and Tobey Maguire). Others were introduced through ex-boyfriends, mutual hairstylists, and at a variety of different industry events.

Click through the gallery to see all of our favorite celebrity BFFs.