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 . At the beginning of her career , Gaga became known for her unconventionality and provocative work . With her fifth studio album Joanne ( 2016 ) , she became the first woman to have four US number one albums in the 2010s .