Christina Aguilera is once again being recognized for her many charitable works. Next month, the singer will be one of the honorees at the inaugural Muhammad Ali Humanitarian Awards. Aguilera will receive the Humanitarian of the Year Award at the event, being held Oct. 3 in Louisville, Ky., the Muhammad Ali Center announced yesterday (Sept. 19). The awards are designed to "promote achievements in the fight for social justice." Other honorees include former president Jimmy Carter and singer Michael Bolton. Christina's award recognizes her ongoing work in the fight against world hunger. She has served as the anti-hunger ambassador for the UN World Food Programme since 2010, and has traveled with the organization on relief trips to Haiti, Guatemala and Rwanda. The singer is also the global spokesperson of Yum! Brands' World Hunger Relief effort. Her charitable endeavors in support of a variety of causes was recently honored at the 2012 ALMA Awards, where she received the NCLR Special Achievement Award for her "incredible career and exceptional work in philanthropy."