Nicole Scherzinger has offered a back-up plan to U.S. vice presidential candidate Sarah Palin should she not make it into the Oval Office next month.The Pussycat Doll believes that Palin would be a great addition to the sexy girl group, if her election campaign fails next month.The singer is convinced former beauty queen Palin has got what it takes to join the all-singing all-dancing five-piece.The Buttons hitmaker says, "She seems like a headstrong woman, a tough chick. And she's hot."It's not the only offer on the table for the 44-year-old Republican governor of Alaska - Playboy boss Hugh Hefner has already asked her to strip naked in the famous men's magazine.

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