The main characters of "Fifty Shades of Grey," Christian Grey and Anastasia Steele," have been the talk of fans all around the world.

The upcoming movie, based on E.L. James' steamy bestselling novel, is on every fan's mind, and they want to know who will play their favorite characters in the book.

A lot of female fans go on and on to talk about who will play sexy 27-year-old billionaire Christian Grey, but they also want to know who will play innocent Anastasia Steele. Former "Gilmore Girls" star Alexis Bledel has now been added to the frontrunner list of stars.

Bledel is 30-years-old, much older than Anastasia, and even older than Christian. Can that put her out of the running for the part? Not at all.

FansShare describe Bledel with "seductive blue eyes and a stance that binds awkward charm and sex appeal."

"The way Alexis enunciates and expresses herself is also not far from the way intelligent literature graduate Anastasia carries regular conversations."

Movie Pilot describes Bledel as a "spot on" resemblance to Anastasia, who has big blue eyes. "Not only is Bledel cute as pie, but she has Ana's sweet and innocent look down pat," Movie Pilot said. "She looks like she can blush and chew her bottom lip with the best of them at the sight of sexy Christian, so we don't care that she's actually 30 years old (if you can believe it). She's our girl!"

How do fans see the perfect Anastasia Steele?

People Magazine described Ana as "'a pale, brown-haired girl with blue eyes too big for her face.' She's clumsy and awkward but very beautiful - though she clearly doesn't see that herself. Of course, Christian does, and he's not shy about complimenting her 'beautiful skin, pale and flawless.'" She also has a slim figure, which he's not shy about appreciating.

Anastasia is a 21-year-old recent college graduate. She's innocent and unsuspecting about Christian's intentions, but she quickly opens her mind to the unusual sexual tastes of Christian, who is loves the world of S&M, where he is the dominator.

Bledel has some competition. Emma Watson and "Pretty Little Liars" star Lucy Hale has also been in the forefront to play Anastasia, who enters a submissive/dominant relationship with BDSM-crazed Christian.

"Harry Potter" star Emma Watson, 22, is said to be an "obvious choice" to play Ana, according to People Magazine. She has played the awkward, doesn't-know-she's-gorgeous role before.

Celebs.gather.com said "Emma Watson is perfect for the role." She has a persona of a naïve virgin.

"Emma, like Anastasia, is, despite her youth, at a crossroads in her life. Steele is a clueless virgin "ushered into a strange world of sex when she meets Christian Grey, [who] beyond just yielding control of her body to this man...is also a woman navigating a crisis of identity." Watson is a woman reportedly eager to leave her childhood career behind her and emerge as an actress who can carry a "grown-up film," according to Celebs.gather.com.

Lucy Hale, 23, openly admitted to MTV News that she is reading the "Fifty Shades" books and said that she is interested in the role of innocent Anastasia.

"I definitely am ready to take a step and do something a bit more risky, absolutely, but it's a fine line," she said. "I don't know what that fine line is, but I'm definitely ready to explore a darker side of my acting abilities."

"I'm definitely ready to explore a darker side," she said of her acting career, according to Celebs.gather.com. She said she's ready to do something a "little more risky."

Hale, who stars as Aria Montgomery in "Pretty Little Liars," is a brunette with full lips and sex appeal.

Policy Mic describes her as a "porcelain doll beauty."

With so many choices still lingering up in the air, fans are dying to know who will play these crucial roles. Not only is the book about bondage, sex, and a BDSM-based relationship, but it's also about the emotional and deep connection, along with self-discovery that brings the book to life. Whoever will play the roles has some shoes to fill.