British actress Tilda Swinton only agreed to star in upcoming blockbuster The Chronicles Of Narnia: The Lion, The Witch And The Wardrobe after director Andrew Adamson made her fall in love with the movie.

The 45-year-old was reluctant to jeopardise her indie movie image by starring in the Disney adaptation of CS LEWIS's children's book - but she was won over by Adamson's vision for her role as JADIS, THE WHITE WITCH.

She says, "I would have made it with him if it had been a garage production for $200,000. I really would have."

And Adamson knew he had made the right choice as soon as he saw Swinton transform herself into the magical character.

He says, "What we really wanted was a true human type of evil, and I knew that Tilda had the sort of intelligence and sophistication to pull that off.

"You can never imagine anyone else playing this role when you see Tilda onscreen."