Some fans are still in doubts that Dakota Johnson would be able to pull off the innocent yet sexy role of Anastasia Steele for "Fifty Shades of Grey." Well, the only way to convince fans is for Dakota to just bring it to the big screen once the film debuts. However, one director claims Dakota Johnson had already been "extremely sexual" in her countless roles.

E.L. James might have disappointed a handful of fans by casting Dakota Johnson and Charlie Hunnam for the film adaptation of her best-selling erotica novel. Critiques claim both Dakota and Charlie don't have the right looks and acting chops for the part of Anastasia Steele and Christian Grey. Still, executive producers aren't ones to be swayed by online petitions and fan hate, and the same goes for the lead stars.

If anything, Dakota and Charlie have all the experiences needed for the erotica film. Hunnam stated himself that he has no problems baring it all for the film, given he's been doing so since the age of 16.

"You know what, I had such a baptism of fire with regards to sexuality on camera at the beginning of my career," said Hunnam to the AP during the promotion of "Sons of Anarchy."

"I starred in the British Channel Four miniseries Queer as Folk, where I played a young, gay character, and there were some incredible, explicit sex scenes on that show. ...Now I am 16 years older and more mature so I don't anticipate them being too much of a problem. It's like anything else, just an exciting challenge," continued Hunnam.

Also, Hunnam isn't the only star who had been exposed to such roles. One director who had long been working with Dakota claimed she, too, has had her share of sexy scenes and sensual roles. In an interview with the NY Post, the Hollywood director claims Johnson's prominent roles have been "extremely sexual."

"It'll be challenging to make Dakota believable as an innocent when it comes to sex and men. All of Dakota's prominent roles to date have been extremely sexual. She's even played the mom of a 6-year-old! So I'm a bit dubious as to whether she's really right for this role," stated the Hollywood director. "But, I also think she's been surprising everyone with her work so far. There's always a great amount of skepticism about a model-turned-actor - especially one with famous parents - but I think she's proven herself to have more skill and depth than was expected of her, and she's definitely been choosing smart projects to build a possibly long-lasting career," added the director.

Check out the slideshow to see more of the "extremely sexual" Dakota Johnson who plays Anastasia Steele in "Fifty Shades of Grey."

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