When it comes to celebrities, they are so often put on a pedestal that it's easy to forget they have faults. We like to imagine them as superhumans who have risen above the rest of us. But the reality is that no one is perfect, not even celebrities.
In fact, being famous may even bring out character traits in stars that are far less than desirable. Click through the following gallery to see which celebrities have a reputation for being very difficult on set.