It’s unbelievable—but Olympic star Jessica Ennis is in Docklands tomorrow (Friday) to sign copies of her new book.

Britain’s most famous woman athlete turns up at Waterstone’s bookstore in Canary Wharf’s Jubilee Place at 1pm to sign copies of her autobiography ‘Unbelievable’—the story that takes her “from childhood dreams to winning Olympic gold.”

The 26-year-old Yorkshire lass won the top medal in the heptathlon at the summer Olympics with a British and Commonwealth record score of 6,955 points. She has just been named European Female Athlete of the Year.