Ben Affleck and Matt Damon are best buddies, but who knew they're related?

Hollywood is a small town but apparently, it is only getting smaller! A bunch of our favorite celebs are actually related — including two very cute Canadians — can you guess which ones?

MORE: Mila Kunis, Kate Bosworth, and 6 Stars With Different Eye Colors!

Watch the video below to find out what other celebs are related!