U.S. first lady Michelle Obama, center, applauds as she attends cultural performances with her daughter Malia, right, and Sasha, covered, at Oca da Tribo restaurant in Brasilia, Brazil, Saturday March 19, 2011. Michelle Obama and her two daughters Sasha and Malia attended a cultural performance with young Brazilians, many from disadvantaged backgrounds who have participated in a range of U.S. sponsored exchange and leadership development programs. (AP Photo/Silvia Izquierdo)