6.Reese Witherspoon and Vince Vaughan
There were rumors that Reese Witherspoon and Vince Vaughn didn’t get along so well while filming Four Christmases (2008). Apparently, the actors have completely different filming styles. While Witherspoon tends to be well-prepared and sticks to the script, Vaughn prefers to wing it. The two did not appear on the red carpet together, further fueling the story, however, Witherspoon has tried to dispel the rumors by saying that Vaughn was “the funniest person” she’s ever worked with.
