Justin Timberlake

Justin Timberlake will perform a surprise set at the London Live Earth show.The 'SexyBack' singer and his producer Timbaland are expected to join Duran Duran on stage at the new Wembley Stadium for the spectacular concert on Saturday. Justin is a huge fan of the 80s pop band - who he worked with on their new album earlier this year - and reportedly jumped at the chance to perform with them. A source told Britain's The Sun newspaper: "Justin and Timberland have been rehearsing. They have something special up their sleeve for fans at Wembley.They are juggling their schedules to make it happen."The 26-year-old singer will make his surprise appearance hours before performing at London's The O2 arena, the latest show on his 'FutureSex/LoveShow' tour. Meanwhile, the full line-up for Live Earth London - one of a series of global concerts being held to highlight the dangers of global warming - has been unveiled. Highlights include Madonna closing the event with hit 'Hung Up', the Beastie Boys blasting out 'Sabotage', Metallica and Red Hot Chili Peppers, both introduced by US comedian Chris Rock, and Keith Urban and Alicia Keys teaming up to perform Rolling Stones classic 'Gimme Shelter'. Comedian Ricky Gervais will introduce spoof rock band Spinal Tap, while Genesis, fronted by Phil Collins, will kick off proceedings.Other presenters include Pierce Brosnan, Thandie Newton, Ben Affleck, Penelope Cruz, Catherine Tate and British radio DJ Chris Moyles.The 24-hour Live Earth concert series - organised by former US Vice President Al Gore - will begin in Sydney on Saturday and continue with shows in Tokyo, Shanghai, Johannesburg, London, Hamburg and Istanbul, before concluding in New York.