Kevin Costner is a legendary actor with millions of fans worldwide. However, being legendary does not change the fact that he is a human being with - possibly - some flaws just like the rest of us. The recent rumors regarding the actor allege that Costner is quite difficult to work with, and his so-called "diva" attitude might cost him Yellowstone one day. Do you consider Costner a movie star with a huge ego? Let us know in the comments!