"Fifty Shades Of Grey" author E.L. James has announced a screenwriter for the highly anticipated film version of her hit erotic series.

James announced that Kelly Marcel was chosen to pen the script to the film adaptation of her wildly popular trilogy.

Marcel, who wrote the script for Disney's upcoming film "Saving Mr. Banks," will adapt the books for Focus Features and Universal.

"Fifty Shades of Grey" film producers Michael DeLuca and Dana Brunetti, who produced the Oscar-winning "The Social Network", confirmed the hiring and their passion for Marcel's work in a statement.

"Kelly's work demonstrates her flawless structural technique and passionate commitment to emotion, humor and depth of character which is particularly visible in the celebrated screenplay for the upcoming "Saving Mr. Banks'", De Luca told The Hollywood Reporter.

"We were all taken with the depth and passion of Kelly's engagement with the characters and world E.L. James has created, and we knew she was the right person to augment our Fifty Shades family," Brunetti added.

"Saving Mr. Banks" follows Walt Disney's pursuit to acquire film rights to author P.L. Travers' novel Mary Poppins over two decades. The film centers on the rocky relationship that formed between both Disney and Travers.

Marcel received high accolades in Hollywood for how well she penned the script for Disney. 

"Saving Mr. Banks" stars Tom Hanks, Emma Thompson and Colin Farrell.

Focus Features and Universal bought the film rights to the "Fifty Shades of Grey" trilogy for $5 million in March.

The books, dubbed "mommy porn" in literary circles, have sold tens of millions of copies worldwide and the author, E.L. James, has earned over $50 million this year alone.

With the film's producers and screenwriter in place, now the team can focus their search for the perfect actors to portray Christian Grey and Anastasia Steele.