The author of the 'Harry Potter' books, JK Rowling is to appear in a special episode of 'The Simpsons'.
Rowling has already recorded the episode, in which the family travel to London and bump in to the author outside a bookshop.
Lisa, who is a fan of the 'Harry Potter' books, stops to talk to her.
The makers of the long-running animated show say every British cliché will be trotted out for the episode.
There are also reports that the actor Ian McKellen will appear and that series creator Matt Groening wants Tony Blair to provide his own voice.
The trip to England is instigated by Homer who is trying to find a woman Grandpa Simpson had a relationship with during the war.
