Hollywood star Nicole Kidman sneaked into rapper JAY-Z's history-making gig at London's Royal Albert Hall last week (27SEP06). The GIRLS GIRLS GIRL hitmaker was the first hip-hop star ever to perform at the Victorian building. He was joined onstage by girlfriend Beyonce Knowles, rapper pal Nas, Chris Martin and Gwyneth Paltrow. Oscar winning Paltrow sang backing vocals for Jay-Z's track SONG CRY. Kidman admitted this week (ends06OCT06) she was also among the audience, but was unrecognisable in a baggy top and baseball cap. She says, "Seeing Gwyneth on stage with Jay-Z was amazing - she has a great voice."