The light bulbs were flashing overtime last night for Madonna and Sharon Stone at the première of the documentary I Am Because We Are. The queen of pop wowed on the red carpet in this black and silver spangly gown from Chanel's couture spring '07 collection. While Sharon also looked smashing in a full length black halter neck dress with sequinned detailing. The documentary, which examines the plight of Malawi AIDS orphans, was written, narrated and produced by Madonna. Click play to watch footage of the pair on the red carpet in Cannes.