Reese: Vince is a Child!

She’s Type A, and he’s old school — no wonder Reese Witherspoon and Vince Vaughn didn’t get along while filming their holiday comedy, Four Christmases.

According to a friend, Reese is dreading the movie’s promotional tour with Vince, whom she describes as “the biggest child I’ve ever met!”

“Promoting a movie involves long hours, and she’ll have to spend a lot of time with someone who gets under her skin,” the pal tells OK!.

“Reese is professional — she’ll grit her teeth, fake a smile and pose for pictures — but she’s not looking forward to it.”

- from Ok