Singer Beyonce performs at the Rock in Rio Music Festival in Rio de Janeiro early September 14, 2013. REUTERS/Ricardo Moraes (BRAZIL - Tags: ENTERTAINMENT SOCIETY) FOR EDITORIAL USE ONLY. NOT FOR SALE... more 
Singer Beyonce performs at the Rock in Rio Music Festival in Rio de Janeiro early September 14, 2013. REUTERS/Ricardo Moraes (BRAZIL - Tags: ENTERTAINMENT SOCIETY) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS less 
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Reuters | Photo By RICARDO MORAES / REUTERS
Fri, Sep 13, 2013 11:47 PM EDT