Britney is hoping the guest appearance on the programme will boost her acting career.













One insider said "This will be an amazing sight. Millions will tune in to see the two of them fighting in their trademark figure-hugging outfits. It will be a sure-fire ratings hit" reported the papers.













Britney made her big-screen debut in movie 'Crossroads'.













She also appears in the forthcoming new Austin Powers film.













If you were to ask me, critic-wise, I feel that Britney isn't very good as an actress to be honest. She could learn though. No harm in that. Now, Mandy Moore seems like a natural on the big screen right.