Christina Aguilera is raising her voice to help fight world hunger. Yum! Brands announced today that the singer will be the global spokesperson for the company’s World Hunger Relief effort. Aguilera will appear in public service announcements and in-store advertising, and will be the face of the campaign’s Web site,

Yum! Brands, which owns the KFC, Pizza Hut and Taco Bell restaurant chains, tapped Aguilera in the hope that her popularity will raise interest in the campaign and encourage individuals to donate or volunteer their time.

World Hunger Relief, launched in 2007, spurs company employees, franchisees and their families to volunteer and raise funds for hunger relief initiatives. According to Yum! Brands, the program has raised $36 million for organizations such as the United Nations’ World Food Programme, and is helping to provide approximately 160 million meals to people throughout the world.