Emma Watson set to be the new Keira Knightley

She's already a global star as Harry Potter's Hermione Granger.

Now experts say her classic but ethereal English beauty could make actress Emma Watson as in demand to model for leading fashion houses as Keira Knightley.

Watson's first fashion campaign, for Burberry, sent its sales soaring by 12 per cent in the final three months of last year to £380 million, smashing forecasts. Trench coats and handbags flew off the shelves after Watson was pictured with them. Burberry has signed her for a second season this spring/summer. The contract finishes in July.

Karl McKeever, brand director at Visual Consultancy, said: "I expect her to be extremely in demand. She could be the next Keira Knightley, who landed one of the Chanel contracts."

Neil Saunders, consulting director at retail analysts Verdict, said: "Emma is girl-next-door with a twist." But he warned: "She has to be careful. You need to be a very powerful celebrity to model for several simultaneously, or the impact can wane."