Prince Harry broke the Guinness record for fastest-selling non-fiction book of all time thanks to his autobiography, The Substitute, which appeared on bookstore shelves earlier this week.
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The controversial memoir sold 1.43 million copies on its first day on sale in the UK, US and Canada, the Guinness World Record said on its site.
The record was previously held by former US President Barack Obama for his autobiography, A promised land, released in 2020 and sold 887,000 copies on the day of its release.
“The first full day of sales of The Alternate represents the highest sales total for a non-fiction book ever published by Penguin Random House,” the book publisher confirmed in a statement.
According to the Guinness World Record, the numbers are particularly impressive considering that most of the juicy details were revealed just days before the January 10 release.
Across all categories, the fastest-selling book in history is the latest installment in the saga Harry Potter, the JK Rowling, Harry Potter and the Deathly Hallows, which sold 8.3 million copies on its release day in 2007.