On Wednesday, the 27-year-old singer revealed the date and details for the charity event's second go-around in support of the Clara Lionel Foundation, which she founded in 2012 in honor of her grandparents, Clara and Lionel Brathwaite.
Kevin Hart will host and Lionel Richie will perform at the star-studded event taking place at the Barker Hangar in Santa Monica, California, on Dec. 10.
"I'm so proud of the work the Clara Lionel Foundation has done in its first year and can't wait to celebrate with the iconic Lionel Richie and incredibly talented Kevin Hart at this year's Diamond Ball," the Barbados native said in a statement.
CLF, which aims to improve the quality of life for communities globally in the areas of health, education, arts and culture, is a foundation Rihanna says is near and dear to her heart. The "Diamonds" singer founded CLF after witnessing the shortcomings of the Barbados healthcare system first-hand.
"I am beyond proud of the work the Clara Lionel Foundation has done. Over the past year, we have helped transform the Queen Elizabeth Hospital in Barbados into the most modern cancer treatment facility in the Caribbean," she told ET. "With the funds raised from the inaugural 2014 Diamond Ball, we were able to purchase two state-of-the-art pieces of equipment for the hospital’s Clara Braithwaite Center for Oncology and Nuclear Medicine."
Two million dollars was raised at last year's event.
"The most significant addition, the brachytherapy system, is the first of its kind in North America and one of only three in the world," she added. "As a young organization, we have accomplished a lot but there is still so much more to do."
Rihanna said that with the help of her second ball, the foundation hopes to expand even further. "If we can help facilitate a better future for these people, that's what I care about," she said in exclusive video footage given to ET. "If I can save one life, if I can give someone an extra day, an extra week, an extra year, an extra ten years, it's completely worth it. This is exactly what this is about."
"The foundation started when my late grandma got sick. She was diagnosed with cancer and passed away and so I care about fighting this disease giving people a chance," she explained. "Now with the Clara Lionel Foundation, everything seems to be in motion," she continued. "Of course, I can't do it alone, which is why I'm partnering up with so many people that care as much as I care."
Last year, Rihanna enlisted the help of her famous friends Brad Pitt, Jimmy Kimmel, Kim Kardashian, Big Sean and Salma Hayek to make the black-tie charity event a success. Watch the video below to hear more.