Kate, 37, teams up with Jennifer Saunders and Joanna Lumley for the special episode which is being screened as part of Sport Relief.

The show also features many other celeb cameos including Stella McCartney and male model, David Gandy.

A source told The Mirror: 'Kate was really excited to get involved with the show. She's a real fan and always quotes it with her mates.'

'She sees the parallels between her life and Patsy and Eddy's, and she finds it really funny.

'When she got the script, she squealed with delight. She thinks it's brilliant, and she likes having a giggle at her own expense.'

Sounds like a marvelous idea, sweetie darling.

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