Fifty Shades author 'embarrassed' at men reading her books
28 November 2012 Last updated at 22:23 GMT
The erotic novel, Fifty Shades of Grey, became a British best seller and topped the list for an unprecedented period.
More than 60 million copies later, there is a Hollywood film is in the pipeline and the possibility of three further books.
Will Gompertz spoke to author, EL James, who said she was embarrassed about male readers, reading "my fantasies".