The cast of Orange if the New Black
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Orange is the New Black stars on real prison life

Orange is the New Black is the number one hit show on Netflix and its stars think they know why.

Actors Kate Mulgrew, who plays Red, and Selenis Leyva, who plays Gloria, told the BBC's Alex Stanger why the show's success is down to its creator.

Orange Is The New Black season 4 will be available on Netflix in the UK from Friday 17 June.

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