Stars Hail Nelson Mandela on 91st birthday Photo Gallery

Former South African President Nelson Mandela and his wife Graca Machel celebrated Mandela's 91st birthday at his home in Johannesburg

Some of the biggest names in the world of music came together on stage to celebrate the 91st birthday of Nelson Mandela, the man who fought apartheid. French First Lady Carla Bruni performing during the Mandela Day celebrations in New York.