JK Rowling
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JK Rowling: Harry Potter send-off extraordinary

7 July 2011 Last updated at 23:02 BST

Harry Potter author JK Rowling says the reception to the final film in the series has been "extraordinary".

Thousands of fans packed London's Trafalgar Square on Thursday at the world premiere of the final film.

Despite torrential rain earlier, the sun shone down as stars of Harry Potter and the Deathly Hallows: Part II spent more than three hours signing autographs.