Rihanna Films PSA for American Cancer Society

Though the holidays are just around the corner, Rihanna has her mind on using her celebrity to help others. The Bajan singer has partnered with the American Cancer Society to record a PSA, where she gives a quirky rendition of the 'Happy Birthday' song and wishes many more birthdays in hopes of increasing the number of cancer survivors.

"More birthdays mean more hope, more love, more friends, more summers, more memories that you can enjoy and spend with your family and your friends and the people that you love and the people that love you because you deserve that," she said in the clip.

In the PSA, RiRi is sitting among presents wrapped in special paper designed by Kari Moden, who crafted the print to represent all the women who have overcome breast cancer by getting regular screenings.

"Whenever I have a birthday, it always excites me because it's another year of accomplishment, another year of being celebrated and celebrating all the things to come in the next year," Rihanna explains after singing an impromptu version of the intro to 50 Cent's 'In Da Club.' "I always look forward to the next birthday and the next birthday. It's exciting that we're doing this whole campaign with more birthdays because we want to help you celebrate more and more birthdays."