Entertainmentwise reported last month that Reese Witherspoon and Vince Vaughn haven’t exactly been seeing eye-to-eye on the set of their new movie – and now it’s emerged that the actress is refusing to film a sex scene with her roly-poly co-star.

Reese is said to be appalled at the idea of doing the nasty with Vince, who has reportedly rubbed her up with wrong way with his ‘laid back’ attitude to work.

"Reese has an issue with the scripted love scene," an on-set source tells PageSix.com about the humourous “American Pie-style romp.”

"Reese is such a prude, she thinks it's just too much," the insider adds.

Mmm, we can see her point. Would you hit it?