Fans of the 'Fifty Shades' trilogy will soon be able to buy merchandise lines inspired by the best-selling soft-core books.

The series' master licensing agent, UK company Caroline Mickler, has flagged the development of 'Fifty Shades' lingerie and sleepwear, clothing, fragrances, beauty products, bedding, home furnishings, stationery, jewellry, and unsurprisngly, adult products.

According to a press release from Caroline Mickler, there is expected a be a strong market for the sexy spin-offs among females.

'Fifty Shades of Grey' is the first book in a trilogy following the relationship between graduate Anastasia Steele and young billionaire Christian Grey.

Today Tonight: Interview with 50 Shades author

A story of sexual submission and dominance that started out as 'Twilight' fan fiction, 'Fifty Shades' became a virtual publishing phenomenon after it was published as an e-book and a print-on-demand paperback in May 2011.

Following the books' viral success, the film rights have been snapped up by Universal Pictures and controversial writer Bret Easton Ellis flagged his interest in writing the movie adaptation on Twitter yesterday.

While the erotic novels have been criticised for their lack of style, the series has become a global bestseller, reportedly moving more than 15 million copies since its release by mainstream publishers in April 2012.

Related: '50 Shades of Grey' spurs sale of sex toys

A spokesperson from Vintage Books, the 'Fifty Shades' publisher in the US, told media that the series has sold as many copies in three months as Stieg Larsson's 'The Girl with a Dragon Tattoo' trilogy sold in three years.

The three novels, 'Fifty Shades of Grey', 'Fifty Shades Darker' and 'Fifty Shades Freed', are among the top ten bestselling books in Australia.

The reverberation of the trilogy's dramatic success has been felt outside the publishing world. Adult store Sexyland, which has released a 'Five shades of fun' BDSM range, has reported a 35 per cent increase in sales.

A 'New York Post' article recently reported a spike in the sale of 'accessories' (like clothes line rope) used in Ana and Christian's sexual exploits.

Like us on Facebook for daily recipes, relationship advice and beauty tips

Related Links:
Men's Health: what women really think of porn
Independence in a relationship: how much is too much?
Happy housewives with wider waistlines