The Carousel of Hope will once again feature three of the top current superstars in show business! Beyonce will join headliners Faith Hill and Josh Groban at The Carousel of Hope, the world’s premiere charity event benefiting childhood diabetes, hosted by Barbara and Marvin Davis, it was announced today. The 16th gala is set for Sat., Oct. 23, in Beverly Hills, Calif., at the Beverly Hilton. For the first time, Mercedes-Benz will be the presenting sponsor and a highlight of the evening will be the auctioning of an all-new 2005 Mercedes-Benz SLK350.