HERMIONE GRANGER is as surprised as Harry when he is chosen as a Hogwarts champion by the Goblet of Fire - but is a great resource to him as he prepares for each task. Her friendship with Ron is tested, however, when he accuses of her "fraternizing with the enemy" at the Yule Ball.       EMMA WATSON, 15, reprises her superb portrayal of the bookish, but kindhearted Hermione Granger, a character now starting to develop an interest in things other than books!       Playing Hermione in the first film saw Emma's debut into the world of professional acting, although her natural ability has been evident since an early age.       Her brilliant performance in the role of Hermione has won Emma a huge following throughout the world and the highly prestigious AOL Award two years running for Best Supporting Actress for Harry Potter and the Chamber of Secrets and Harry Potter and the Prisoner of Azkaban. She has also just been voted Best New Performer for Harry Potter and the Prisoner of Azkaban by the readers of Total Film magazine.       Emma continues to balance filming with her studies and school activities and is a keen hockey, netball, tennis and rounders player, as well as a budding athlete. She is also an art scholar and boasts the most colorful and creative dressing room at the studio! Her other hobbies include seeing her friends and family, traveling, dancing (street jazz, hip hop, salsa and the introduction of ballroom dancing for her role in Harry Potter and the Goblet of Fire) and singing.