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From monarch to monster, Dame Helen Mirren on her new role

8 July 2013 Last updated at 07:49 BST

She is best known for her portrayal of the Queen, but for her latest role Dame Helen Mirren has taken on an altogether more "scary" challenge.

The 67-year-old lends her voice to the terrifying creature Abigail Hardscrabble in the latest Pixar animation, Monster's University.

Speaking about her trip to Pixar's headquarters in California on BBC Breakfast, she said: "It was one of the highlights of my life actually."

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