One of the most colorful characters in the third book is Uncle Vernon's sadistic sister. She is the one who loves to cuddle Dudley, and make fun of Harry. She has been cast. This is from CBBC Newsround.....
Hot new casting details for Harry Potter and the Prisoner of Azkaban are beginning to emerge.
There's no news yet on key roles like Sirius Black or Professor Lupin.
But we can tell you that the role of Aunt Marge - Uncle Vernon's monstrous sister - will be played by British actress Pam Ferris.
A photo of her:
Can't wait until we learn who is going to play Lupin and Sirius.