Rihanna has recruited comedian Dave Chappelle and rapper Kendrick Lamar for her 2017 Diamond Ball.

This will be the singer's third annual event to raise funds for her Clara Lionel Foundation, and she thinks this could be the biggest show to date.

"I'm thrilled that the incomparable Dave Chappelle will kick things off as the official host of this year's Diamond Ball and Kendrick Lamar will take the stage for an unforgettable performance," Rihanna said.

The first Diamond Ball was held in 2014 and featured Jimmy Kimmel as host, special guest Brad Pitt and a performance from Rihanna herself, while Kevin Hart and Lionel Richie were the stars of the show in 2015. Rihanna did not host a Diamond Ball last year (16).

Rihanna, who accepted Harvard University's 2017 Humanitarian of the Year award in February (17), set up the Clara Lionel Foundation, named after her grandparents, in 2012.

The Diamond Ball will be held in September (17).