There is one thing certain in life, and that's the fact that we won't get along with everyone. It doesn't even matter who you are. But as a mere mortal, our grievances are usually kept private — unless you're a celebrity, of course.
When it comes to that, the whole world is a witness. When two or more famous people have a beef with each other, they air their dirty laundry for everyone to see. And the following are some now infamous celebrity feuds.