Global pop superstar Katy Perry, as UNICEF’s Goodwill Ambassador, has a special focus on engaging young people in the agency’s work to improve the lives of the world’s most vulnerable children and adolescents. The Twitter darling shared about her recent trip in her Twitter account. When I visited Vietnam, I learned that the change we want starts when we choose to care: https://t.co/mH1HjKv3XE #FightUnfair #ForEveryChild — KATY PERRY (@katyperry) June 29, 2016