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US performer Lady Gaga arrives at the Versace atelier in Milan, Italy, Moday, Oct. 1, 2012. Lady Gaga will stage the only Italian concert of her tour in Milan Tuesday. (AP Photo/Luca Bruno)

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.