Demi Lovato, Mandy Patinkin, and Joe Manganiello join the Smurfs at UN headquarters

They already lent their voices to the movie “Smurfs: The Lost Village,” now Mandy Patinkin, Demi Lovato and Joe Manganiello have lent their voices to help the United Nations. The three were on hand at United Nations Headquarters Saturday where they teamed up with the United Nations, UNICEF and United Nations Foundation to celebrate the International Day of Happiness and to show their support for the Sustainable Development Goals, part of the #SmallSmurfsBigGoals campaign.