Dakota Johnson has been cast as Anastasia Steele in "50 Shades Of Grey," this according to author E L James who tweeted the news on Monday. Johnson was first rumored for the role in a report from TheWrap on Aug. 22.

Johnson, whose parents are Don Johnson and Melanie Griffith, is best known for her work on the short-lived Fox sitcom "Ben & Kate." She also had memorable supporting roles in "The Social Network" and "The Five-Year Engagement." Her casting ends a months-long search for Anastasia, one which saw actresses like Emma Watson, Shailene Woodley, Alicia Vikander and Analeigh Tipton mentioned as possibilities for the coveted role. James' novel, the first in a trilogy, focuses on a young woman who finds herself involved in a sexual affair with the title character, Christian Grey. Charlie Hunnam was cast in that role on Monday as well.

Focus Features will release "50 Shades of Grey" on Aug. 1, 2014. Sam Taylor-Johnson is directing the project.

Deadline.com also reported on Johnson's casting, claiming an exclusive on the story despite the fact that James' tweet happened a full 11 minutes before the site published.

Loading Slideshow...
  • Celebrity Photos: September 2013

    Josh Duhamel was full of smiles as he stepped out in Los Angeles, Calif., on Sept. 3, just days after welcoming a son named Axl into the world.

  • Celebrity Photos: September 2013

    Dianna Agron was seen out and about at the East Village neighborhood in New York City on Sept. 3.

  • Celebrity Photos: September 2013

    Scarlett Johansson was all smiles as she arrived at the 70th Venice International Film Festival on Sept. 3 in Venice, Italy.

  • Celebrity Photos: September 2013

    Olivia Wilde left her hotel dressed to impress in London, England on Sept. 2.

  • Celebrity Photos: September 2013

    Hayden Panettiere rocked a teeny bikini while vacationing in Miami, Fla., on Sept. 1.

  • Celebrity Photos: September 2013

    Brooke Burke looked stunning sitting on the Can-Am Spyder in Malibu, Calif., on Sept. 2.

  • Celebrity Photos: August 2013

    Ashley Tisdale and Christopher French hiked Runyon Canyon in Los Angeles, Calif., on Aug. 31.

  • Celebrity Photos: September 2013

    Maria Menounos was spotted at a Los Angeles drug store looking to extend her color with Jergens Natural Glow + Protect moisturizer on Sept. 2.

  • Celebrity Photos: August 2013

    Kourtney Kardashian made an appearance at 'Kardashian Khaos' at the Mirage hotel and casino in Las Vegas, Nev., on Aug. 31.

  • Celebrity Photos: August 2013

    Emmanuelle Chriqui rocked a yellow string bikini as she and boyfriend Adrian Bellani hit the beach in Miami, Fla., on Aug. 29.

  • Celebrity Photos: August 2013

    Khloe Kardashian tried to keep a low profile under an oversized hoody as she headed into a Los Angeles gym on Aug. 29.

  • Celebrity Photos: August 2013

    Ashley Benson grabbed an iced coffee after her workout at the gym on Aug. 29 in West Hollywood, Calif.

  • Celebrity Photos: August 2013

    Mark Wahlberg left the set of "Transformers 4" to grab some lunch in Chicago, Ill., on Aug. 28.

  • Celebrity Photos: August 2013

    Heidi Klum looked amazing at "America's Got Talent" Season 8 Red Carpet Event at Radio City Music Hall in New York City on Aug. 28.

  • Celebrity Photos: August 2013

    Jessica Biel carried an umbrella as she stepped out in New York City on Aug. 28.

  • Celebrity Photos: August 2013

    Olivia Wilde stepped out of her apartment and headed into the city on Aug. 28 in New York.

  • Celebrity Photos: August 2013

    George Clooney and Sandra Bullock seen together arriving at the Venice Film Festival in Italy on Aug. 28.

  • Celebrity Photos: August 2013

    Cate Blanchett attended the "Blue Jasmine" premiere at UGC Cine Cite Bercy on Aug. 27 in Paris, France.

  • Celebrity Photos: August 2013

    Hilary Duff left a Pilates class in Burbank, Calif., on Aug. 27.

  • Celebrity Photos: August 2013

    Reese Witherspoon treated herself to a manicure at Bella Cures nails in Los Angeles, Calif., on Aug. 27.

  • Celebrity Photos: August 2013

    Katie Holmes on the set of her new film "Miss Meadows" in Ohio on Aug. 26.

  • Celebrity Photos: August 2013

    Alec Baldwin started his Monday with a few errands to run in Greenwich Village on Aug. 26 in New York City.

  • Celebrity Photos: August 2013

    Kate Bosworth spotted with the new Richard Chai tote for eBay Now in New York City on Aug. 26.

  • Celebrity Photos: August 2013

    Beyonce and Jay Z left the Dream Downtown hotel in New York City on Aug. 25 after attending a 2013 VMAs after-party.

  • Celebrity Photos: August 2013

    Ciara used Degree Women with motionSENSE as she prepped herself backstage in New York City on Aug. 26.

  • Celebrity Photos: August 2013

    Selena Gomez attended the 2013 MTV Video Music Awards at the Barclays Center in the Brooklyn borough of New York City on Aug. 25.

  • Celebrity Photos: August 2013

    Miley Cyrus attended the 2013 MTV Video Music Awards at the Barclays Center in the Brooklyn borough of New York City on Aug. 25.

  • Celebrity Photos: August 2013

    Taylor Swift attended the 2013 MTV Video Music Awards at the Barclays Center in the Brooklyn borough of New York City on Aug. 25.

  • Celebrity Photos: August 2013

    Simon Cowell and his pregnant girlfriend Lauren Silverman stepped out in St. Tropez, France on Aug. 25.

  • Celebrity Photos: August 2013

    Lady Gaga left a studio in NYC with Terry Richardson after rehearsing for the VMAs on Aug. 24. She decided to leave her shirt at home and step out in only a bra.

  • Celebrity Photos: August 2013

    Amanda Seyfried grabbed some coffee in Los Angeles, Calif., on Aug. 24, wearing short shorts.

  • Celebrity Photos: August 2013

    Jennifer Love Hewitt showed off her expanding baby bump as she and fiance Brian Hallisay took a stroll around New York City on Aug. 23..

  • Celebrity Photos: August 2013

    Lily Collins wowed in red at the premiere for "The Mortal Instruments: City Of Bones" in Madrid, Spain on Aug. 22.

  • Celebrity Photos: August 2013

    Penn Badgley was seen filming a scene on the set of the movie "Cymbeline" in Brooklyn, N.Y., on Aug. 22.

  • Celebrity Photos: August 2013

    Anne Hathaway headed to a dance studio for rehearsals on Aug. 22 in Los Angeles, Calif.

  • Celebrity Photos: August 2013

    Madonna attended the grand opening of her new gym Hard Candy on Aug 21 in Rome, Italy.

  • Celebrity Photos: August 2013

    Heidi Klum rocks a plunging dress at the "America's Got Talent" Post Show Red Carpet at the Radio City Music Hall in New York City on Aug. 21.

  • Celebrity Photos: August 2013

    Katy Perry wore a matching gray top and leggings as she headed into a friends Los Angeles home on Aug. 21.

  • Celebrity Photos: August 2013

    Liz Hurley attended the Comparethemarket.com launch event for the special edition toy "Agent Maiya" in London on Aug. 21.

  • Celebrity Photos: August 2013

    "One Tree Hill" actress Sophia Bush did some solo shopping in Beverly Hills, Calif., on Aug. 21.

  • Celebrity Photos: August 2013

    Pregnant Fergie and Josh Duhamel arrived at the "Scenic Route" premiere at Chinese 6 Theater in Hollywood, Calif., on Aug. 20.

  • Celebrity Photos: August 2013

    Harry Styles, Niall Horan, Louis Tomlinson, Zayn Malik and Liam Payne of One Direction attended the World Premiere of "One Direction: This Is Us" at Empire Leicester Square in London on Aug. 20.

  • Celebrity Photos: August 2013

    Jamie Campbell Bower and Lily Collins arrived for the "The Mortal Instruments: City of Bones" premiere at Sony Centre in Germany on Aug. 20.

  • Celebrity Photos: August 2013

    Kris Jenner was interviewed by Mario Lopez and Maria Menounos for a segment on "Extra!" at The Grove on Aug. 20 in Los Angeles, Calif.

  • Celebrity Photos: August 2013

    Gwen Stefani and her husband Gavin Rossdale took their eldest son Kingston out in Primrose Hill on Aug. 20 in London, England.

  • Celebrity Photos: August 2013

    Kristen Stewart made her way through LAX Airport in Los Angeles, Calif., on Aug. 19.

  • Celebrity Photos: August 2013

    Kristin Cavallari made sleep a top priority as she was spotted picking up Febreze Sleep Serenity and pillows in Los Angeles, Calif., on Aug. 19.

  • Celebrity Photos: August 2013

    Heidi Klum and her boyfriend Martin Kristen spotted out for a stroll hand-in-hand down the streets of New York City on Aug. 19.

  • Celebrity Photos: August 2013

    Olivia Wilde showed off her sense of humor with a clever "Paws" kitten parody t-shirt while walking home from lunch at Cafe Cluny on Aug. 19 in New York.

  • Celebrity Photos: August 2013

    Liv Tyler went out for some shopping in the West Village of New York on Aug. 18.

  • Celebrity Photos: August 2013

    Ben Affleck and Jennifer Garner were spotted leaving the Tavern restaurant in Brentwood, Calif., on Aug. 17.