RIO DE JANEIRO, BRAZIL - SEPTEMBER 13: Singer Beyonce performs on stage during a concert in the Rock in Rio Festival on September 13, 2013 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)
RIO DE JANEIRO, BRAZIL - SEPTEMBER 13: Singer Beyonce performs on stage during a concert in the Rock in Rio Festival on September 13, 2013 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images)