Britney Spears will be offered the chance to play a group of sex-mad aliens on British sci-fi TV show Doctor Who. Show writer RUSSELL T DAVIES is a massive fan of the pop princess and wants to take the series to Hollywood so Spears can make a spectacular cameo playing a cloned extra-terrestrial. Davies says, "I'd love Britney to do it - it would be so much fun. "I'm not sure she'll come to Cardiff where the show is shot so I'm nagging the BBC to fund a Hollywood special."