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Kermit and Miss Piggy attend premiere in London

5 August 2015 Last updated at 08:35 BST

Miss Piggy and Kermit the Frog have attended the London premiere of 'Muppets Most Wanted'.

They were joined by co-stars Ricky Gervais and Constantine.

The film is the 10th Muppets movie - the stars tell the BBC's Lizo Mzimba the secret of their success.