The world’s biggest movie star, Amitabh Bachchan, will serve as a special ambassador for 46664, the global anti-AIDS campaign headed by Nelson Mandela.

Named after the former South African president’s prison number, the 46664 campaign raises awareness of HIV and AIDS, and raises funds for the prevention, testing, care and support of those infected with the viruses. Bachchan has proved to be an active participant in anti-AIDS campaigns in India, which has one of the world’s highest infection rates.

Bachchan joins current 46664 ambassadors Bill Clinton, Brad Pitt, Will Smith and Oprah Winfrey. Perhaps to distinguish himself from his fellow ambassadors, Bachchan also joined the ranks of senior citizens with blonde highlights (see photo). Population: One.

AFP/Yahoo!: Bollywood superstar Bachchan joins Mandela’s anti-AIDS campaign