In October 2008, US singer-actress Selena Gomez was named UNICEF's spokesperson for the Trick-or-Treat for UNICEF campaign, which encouraged children to raise money on Halloween to help children around the world. She said that she was "extremely excited" to "encourage other kids to make a difference in the world."[144] In August 2009, a 17-year-old Gomez became the youngest UNICEF ambassador ever, passing fellow songstress Hayley Westenra, who was 18 when she was chosen. In her first official field mission, Gomez traveled to Ghana on September 4, 2009 for a week to witness first-hand the stark conditions of vulnerable children that lack vital necessities including clean water, nourishment, education and healthcare.