Lady Gaga
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Lady Gaga: My whole life is theatre

Lady Gaga has taken Oprah Winfrey's crown in the Forbes Celebrity 100 list of most influential and powerful people in entertainment.

Arguably the most recognisable pop star in the world, she has 10 million followers on Twitter and 34 million on Facebook, and has sold more than 15 million albums - but says she still feels like an underdog.

She spoke to the BBC's Charlie Stayt about media attention, being bullied and her music.

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