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Australian actor Abbie Cornish has dismissed reports she is to blame for the breakup of Reese Witherspoon and Ryan Phillippe.
The 24-year-old from NSW has been accused of having an affair with Phillippe on the Texas set of their new movie, Stop Loss.
A witness allegedly spotted Phillippe and a woman who appeared "to fit Cornish's description" kissing at a sushi restaurant.
"It's not true," Cornish's representative told America's Us magazine.
"They are co-stars and that is it."
Other reports allege Witherspoon ended her marriage after she discovered romantic messages Phillippe had written to Cornish on his mobile phone.
