Lady Gaga worked.
Stefani Joanne Angelina Germanotta ( [ ˈstɛfəniː_dʒɜrməˈnɒtə ] ; born March 28 , 1986 ) , known professionally as Lady Gaga , is an American singer , songwriter , and actress . With global album and single sales of 27 million and 146 million respectively , as of January 2016 , she is one of the best-selling musicians of all time . She was ranked at number four on VH1 's Greatest Women in Music , finished second on Times 2011 readers ' poll of the most influential people of the past ten years , and was named Billboards Woman of the Year ( 2015 ) .