Singer Katy Perry named UNICEF Goodwill Ambassador

Singer Katy Perry (R) poses with UNICEF Executive Director Anthony Lake after she was appointed UNICEF Goodwill Ambassador at the UNICEF headquarters in New York, US, on Dec 3, 2013. Katy Perry will focus on improving the lives of the world's most vulnerable children and adolescents, according to the UNICEF. [Photo/Xinhua]