UNITED KINGDOM - JULY 21: Saskia Haifierna, right, the first person to buy a copy of "Harry Potter and the Deathly Hallows" by J.K. Rowlings, poses with a fan dressed as the character Hagrid, at a Waterstones Bookstore in London, U.K., Saturday, July 21, 2007. HMV Group Plc, the U.K.'s largest music retailer, said revenue increased as sales of the new Harry Potter novel boosted its Waterstone's book chain. (Photo by Carl Court/Bloomberg via Getty Images)
