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U.S singer Lady Gaga opens the Philip Treacy Spring/Summer 2013 collection during London Fashion Week, Sunday, Sept. 16, 2012. (AP Photo/Jonathan Short)

Lady Gaga

Singer Lady Gaga, real name Stefani Germanotta, is busy promoting

her upcoming fourth studio album "ARTPOP" and stirring up some trouble.  A political ally of Russian President Vladimir Putin is taking legal action against American pop star Lady Gaga for promoting gay rights to minors during a concert on Dec. 9.