Christina Aguilera became a mother for the first time last year
US pop star Christina Aguilera has been named global ambassador for the charity World Hunger Relief.
The singer, whose hits include Genie In A Bottle and Dirrty, said she hopes to "raise awareness about the issue and move people from hunger to hope".
She added: "It is unacceptable that a child dies every six seconds somewhere around the world from hunger."
In the past the 28-year-old has lent her name to a series of good causes, including Women's Cancer Research Fund.
The four-time Grammy award-winning singer became a mother for the first time last year, to a son named Max Liron.