London, Aug 09: Its hard rock for supermodel Kate Moss in place of the fancy frocks she's used to. She will be belting out a Primal Scream song to guests at a star-studded charity fashion show. According to a report in The Sun, all set to perform the Scottish outfit's track Rocks at the bash for The Prince's Trust, the lady is nervously practising every day. In the meantime, Robbie Williams and Victoria Beckham are expected to do some modelling on the catwalk. Guests will include Sir Elton John and Liz Hurley. A party organiser said: "Kate wanted to be involved on the night and was delighted when she was asked to do something other than modelling. She is close friends with Bobby Gillespie from Primal Scream and thought, because of the title, it was the perfect song to sing. She has called in the help of a voice coach to make sure she doesn't embarrass herself and is practising every day." Kate's rendition of the 1994 hit will accompany a fashion show by close friend, designer Alexander McQueen. Organisers hope to raise one million dollars on the night by mixing up the worlds of fashion and music. Some of the world's leading designers will parade their fashions at the event on October 15 in London's Royal Albert Hall. Calvin Klein, Stella McCartney and Versace have all signed up, says the report. Bureau Report