"Mommy porn" hit Fifty Shades on track to become fastest selling series of all time as sales top 10million in just six weeks


'Mommy porn' hit Fifty Shades on track to become fastest selling series of all time as sales top 10million in just six weeks
Reprints have exceeded 900,000 copies in a single day

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UPDATED:

17:48 GMT, 23 May 2012

Sales of hit erotic trilogy Fifty Shades of Grey have topped 10million, making it one of the fastest and best-selling series of all time.

EL James' explicit sensation has topped charts practically from the moment Vintage Books released it in early April.

Reprints have exceeded 900,000 copies in a single day, the publisher, part of Knopf Doubleday, announced yesterday.

Bestseller: Erotic novel Fifty Shades of Grey has sold 10million copies since it was released by Vintage six weeks ago

Bestseller: Erotic novel Fifty Shades of Grey has sold 10million copies since it was released in the U.S. by Vintage just six weeks ago

Totals sales include paperbacks, e-books and audio books.

Anthony Chirico, president of the Knopf Doubleday Publishing Group, told the New York Times in a statement: 'The sales velocity for Fifty Shades of Grey is unprecedented, with reader demand still growing.

'As we head into the heart of the summer reading season, sales are likely to continue exceeding even our most optimistic forecasts.'

The Fifty Shades books began as fan fiction, inspired by the Twilight series, and tells the story of how billionaire Christian Grey seduces young graduate Anastasia Steele.

Bestseller: Erotic novel Fifty Shades of Grey has sold 10million copies since it was released by Vintage six weeks ago

Bestseller: Erotic novel Fifty Shades of Grey has sold 10million copies since it was released by Vintage six weeks ago

The story continues: Sequels Fifty Shades Darker (left) and Fifty Shades Freed (right) have also lingered at the top of the book charts

Grey has a penchant for bondage and soon envelops her in a world of kinky sex, S&M and XXX-rated bedroom 'contract' games that make for strictly post-watershed reading only.

Unexpected hit: EL James first wrote the trilogy as Twilight fan fiction

Unexpected hit: EL James first wrote the trilogy as Twilight fan fiction

The books became a word-of-mouth e-book hit after first being distributed in 2011 by the Australia-based Writer's Coffee Shop Publishing House.

It became a must-have among well-heeled women on New York's Upper East Side, and was dubbed 'mommy porn' after many admitted the books made them want to have sex with their husbands.

Since Fifty Shades stormed the bestseller lists, it has inspired themed sex workshops and even Funny or Die and Saturday Night Live comedy spoofs.

Not everybody is impressed by the series' racy content though; several libraries in Florida, Wisconsin and Georgia have banned the books

Film rights have been acquired by Universal Pictures and Focus Features.