Nearly 1.6m copies of the final Harry Potter book, Harry Potter and the Deathly Hallows, have been pre-ordered online ahead of its release on 21 July.
According to online retailer Amazon, JK Rowling's seventh Potter book has become its most pre-ordered product.
Demand has surpassed a previous record of 1.5 million copies ordered ahead of the release of The Half-Blood Prince.
The latest film in the series, The Order of the Phoenix, has its European premiere in London on Tuesday.
The film opens across the globe on 11 July.
