Emily Ratajkowski, 'Blurred Lines' topless model, is debuting her first major screen role in David Fincher's 'Gone Girl.' Ratajkowski will be playing Ben Affleck's mistress, Yahoo! reported Tuesday.

Model Emily Ratajkowski is reportedly in talks to star in David Fincher's 'Gone Girl' as Ben Affleck's mistress.

In the movie, which is based on Gillian Flynn's best-selling mystery novel with the same title, Emily Ratajkowski will play the character of Andie, the young mistress of Ben Affleck's Nick Dune.

The story centers on Nick's wife Amy's disappearance on their fifth wedding anniversary. Nick will then be involved in an affair with college students Andie.

20th Century Fox and New Regency are behind the film adaptation of the said bestselling novel.

The cast features: Carrie Coon as Nick's twin sister, Tyler Perry as his defense attorney, Patrick Fugit and Kim Dickens as detectives to the case while Neil Patrick Harris will come in as supporting character.

Bruna Papandrea and Reese Witherspoon are producing the feature adaptation through their Pacific Standard banner along with Leslie Dixon. Production will begin this fall.

According to The Wrap, Ratajkowski began her modeling career at an early age of 14 after signing for Ford Models.

The London-born model was previously featured in ads for Forever 21 and Carl's Jr., and she first made waves when she appeared on Nickelodeon's 'iCarly' as Tasha, and she is said to appear in FOX's 'New Girl' upcoming episode.

Currently, Emily Ratajkowski is the cover of Carine Roitfeld's CR Fashion Book.

Meanwhile, earlier this year, the model-turned-actress stunned everyone when she appeared topless in Robin Thicke's music video for his 'Blurred Lines' hit.

Ratajkowski is represented by Innovative Artists and Untitled Entertainment, The Wrap reported.