Bestselling, Prince Harry’s Memoir “Spare” Breaks Record for Fastest-Selling Book

“Harry Potter and The Deathly Hallows” – JK Rowling’s last novel – currently holds the Guinness World Record for the fastest-selling book of all time after selling 8.3 million copies – or 345,833 books per hour – when it was released in July 2007.

On Wednesday, Penguin Random House announced that “Spare” has set the record for the fastest selling book in British history.