Hotel heiress Paris Hilton has warned actress Charlize Theron to watch out - because the pair could soon be battling for the same movie roles.

The 25-year-old socialite, who previously appeared in critically derided horror film House of Wax, is confident she shares a similar screen style to Theron.

And Hilton has no qualms about putting herself in direct competition with the Oscar-winning star.

She explains: "My acting coach told me I have a similar style of acting to her so we may end up vying for the same parts."