A One Direction fan's online fantasy fiction about the boy band has been so popular that it has won her a six-figure publishing deal.

Anna Todd, a 25-year-old from Texas, decided to try her hand at fan fiction on Wattpad, an online writing community.

The first-timer posted her story, called ‘After’, in 300 daily installments, and amassed more than 800million reads. That’s when Gallery Books came calling and offered her a six-figure advance to turn the stories into a book.