The numbers are staggering: more than 1 billion music video online hits, record sales of more than 50 million, number 7 on the Forbes List of the world's 100 most influential women. Not bad at all for 24 year old Stefani Germanotta, a girl from New York's Lower East Side whom the world now knows as Lady Gaga. In this week's Christmas day Profile, Stephen Smith follows Germanotta's story from rebellious, classically trained pianist to pop's newest and hottest icon.