Dave Chappelle to host Rihanna’s Diamond Ball; Kendrick Lamar to perform

Dave Chappelle has been tapped to host Rihanna’s third annual Diamond Ball on Sept. 14. The black-tie fundraising gala at Cipriani Wall Street in New York will also feature a performance by Kendrick Lamar on a night dedicated to raising money for the Clara Lionel Foundation, an education, health and emergency response organization …