Stephenie Meyer – author of the hugely popular Twilight series - has not read 50 Shades of Grey, and it doesn’t look like she’s going to, either.

The 39-year-old has made comments about the raunchy franchise before. Talking to The Guardian, Meyer said: "Erotica is not something I read. I don't even read traditional romance. It's too smutty. There's a reason why my books have a lot of innocence." This is probably due to the fact she’s a committed Mormon, and married her husband when she was 21. She said her idea of true love "is different than what a lot of other people do," adding: "There's nothing selfish about true love. It's not about what you want. It's about what makes them happy." Meyer has been rather outspoken about the books by E.L James, but that’s probably because people compare it to her vampire novels, calling 50 Shades the ‘Twilight for adults’. "I haven't read it. I mean, that's really not my genre, not my thing," she said to MTV back in the summer of 2012. "I've heard about it; I haven't really gotten into it that much. Good on her — she's doing well. That's great!"

Stephenie Meyer - Stephenie Meyer promotes and signs copies of her new book 'The Host' at Waterstones - London, United KingdomMeyer holds her new book: The Host

50 Shades is due another comparison of Twilight soon, as it’s heading for a cinematic reimagining. With the cast still largely undecided, rumours have been flying around everywhere. Emma Watson and Mila Kunis were both suggested, but the latter has ruled herself out. Ryan Gosling, though, remains Hollywood’s choice to play the male lead.