Fighting between Reese Witherspoon and Vince Vaughn is reportedly threatening to disrupt filming on their new movie Four Christmases.
The actors co-star in the romantic comedy, but according to reports the shoot is being hampered by the pair's arguments over Vaughn's laid-back attitude during work.
Witherspoon is allegedly furious the Wedding Crashers star refuses to adhere to her super-efficient acting methods.
A source tells the New York Daily News, "Vince rolls onto set in the morning looking like he just came in from a night out, while Reese will arrive early looking camera-ready.
"Then Reese tries to force Vince into blocking out each scene and running through their lines as Vince tries to convince her that he's an ad-libber and wants to play around and see where the scene goes.
"She's a one-take perfectionist and Vince likes to try it a few different ways. Sometimes Vince will be standing behind her and he has this look on his face that he just wants to kill her!"
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