Singer Rihanna has enlisted actor Brad Pitt for her inaugural Diamond Ball.

The 26-year-old pop star will be introduced by Pitt at her first annual Diamond Ball, which will take place here Dec 11, reports eonline.com.

The gala, which benefits Rihanna's Clara Lionel Foundation (CLF), will be hosted by Jimmy Kimmel.

"It is such an honour to have Jimmy Kimmel host this event. There is no one more hilarious to make the first annual Diamond Ball an incredible night. I'm blessed by his support," Rihanna said in a statement.

"Brad Pitt is not only a phenomenal talent, but I admire him and am inspired by his philanthropic work," she added.

CLF works to improve the lives of underserved communities worldwide in the areas of health, education, the arts and culture.