One Direction fan fiction getting movie adaptation

London: Writer Anna Todd's 'After' book series, which initially began as Harry Styles fan fiction, is being turned into After: The Movie.

The movie is set to star Harry Potter's hero Fiennes Tiffin as Hardin Scott (the original Harry Styles character) alongside Josephine Langford.

"I was a struggling army wife going to community college who didn't know what to do with my life," Todd told the BBC.

"I would read a lot of fan fiction on (publishing website) Wattpad and felt I had read everything so one day I decided to write a chapter. When I started I had no followers but I did it for fun. After I wrote the first chapter I wanted to know what happened so every day I would write a chapter and it became more popular," she added.

Till date the book has sold 11 million copies, while the online version has had 1.5 billion views.