Reese Witherspoon Refuses Sex With Vince Vaughn

This lady ain't gonna hop in the sack with just anyone. (Courtesy Dreamworks)

Reese Witherspoon will do a lot on camera, but she won't have sex with Vince Vaughn.

While filming their romantic comedy "Four Christmases," the pair have reportedly been clashing constantly. And now when the script calls for the two to get into bed, Witherspoon is saying no. "Reese has an issue with the scripted love scene," an on-set source told the New York Post. "It is meant to be funny, 'American Pie'-style romp, full of bumps and laughs, but Reese is such a prude, she thinks it's just too much."

Despite being one of the highest-haid actresses in Hollywood and having an Oscar to her name, Witherspoon will most likely have to suck it up and do the horizontal tango with Vaughn since he is one of the film's producers.