Last updated at 07:35

Kermit and Miss Piggy attend premiere in London

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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.