Bollywood's Karan Johar picks unknown cast


Bollywood films have changed in recent years with more ambitious and sometimes controversial story lines and more foreign locations.

One of the directors who has pioneered that trend is Karan Johar, who was born into a film making family but made his own name with his first film when he was 25.

He told the BBC that he chose "first time actors" to star in his new film, Student of the Year.

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