Stefani Joanne Angelina Germanotta ( STEF-ən-ee JUR-mə-NOT-ə) (born March 28, 1986), known professionally as Lady Gaga, is an American singer, songwriter, actress, and record producer. She is known for reinventing herself throughout her career and for her versatility in numerous areas of the entertainment industry. Gaga began performing as a teenager, singing at open mic nights and acting in school plays. She studied at Collaborative Arts Project 21, through New York University's…