Last week, it was reported that Emma Watson was the frontrunner to play Anastasia Steele in the hotly anticipated "Fifty Shades of Grey" movie. However, it looks like she has some very big competition.

"Fifty Shades of Grey," written by bestselling author E.L. James, tells the story of 22-year-old recent college grad Anastasia Steele, who enters into a dominant/submissive sexual relationship with 27-year old sexy billionaire Christian Grey, and both explore Christian's world of BDSM (bondage, dominance, submission, masochism).

Another star that has been added to the list of stars is "Percy Jackson & the Olympians" star Alexandra Daddario.

The 26-year-old actress was featured on Radar Online's "5 Faves for '50 Shades of Grey'" list to play Anastasia Steele. The website said, "The Percy Jackson starlet nails Ana's mix of innocence and curiosity."

Daddario is also pinned on Pinterest as a popular choice for the role. One viewer said, "Her + Matt Bomer is perfect!"

One Books & Review commenter said, "I think Alexandra Daddario is the perfect Ana. She has the long brown hair, alabaster skin, blue eyes too big for her face & pouty lips. She has an innocent beauty requiring no makeup & can be played up sexy when need be."

New talks of new television series "Arrow" star Katie Cassidy for the key role of Anastasia are also floating around on the web.

The 25-year-old actress also starred in "Gossip Girl," "Supernatural," and "Melrose Place." She plays Laurel Lance in "Arrow." She is also the daughter of teen idol David Cassidy.

Cassidy has also been associated with playing the role of Kate Kavanagh in "Fifty Shades."

FansShare describes Kate as, "Ana's best friend and room mate, and the reason behind Ana's initial meeting with sexy billionaire Christian Grey" and a "wealthy blonde."

The website suggested Katie Cassidy: "not only does she share the same name as the character, but we think she is just feisty enough to play the gorgeous part."

"Twilight" stars Ashley Greene and Kristen Stewart are also in the running for the crucial role.

According to Hollywood Life, the brunette beauty spoke at the Young Hollywood Awards about the erotic novel.

"I've read it," Greene said, who plays Alice in all the 'Twilight' films. "I feel like I kind of had to, it's now pop culture and they're making it into a film. I'm not finished with all of them, but I'm on the third book."

According to the Examiner, Greene could definitely play the part.

"Greene certainly has the beautiful, wide-eyed looks and innocent nature needed for the part," the website said.

One Books & Review commenter said, "Ashley Greene is definitely the on to play Anastasia...I am so surprised they have not found her yet."

Stewart has been in the front running since the talk of the "Fifty Shades" movie began. After all, Anastasia is based off of Bella's character in the "Twilight" films. Bella is played by Stewart, and fans will see her new face as a vampire in the epic finale, "Breaking Dawn Part 2."

Recently, Stewart admitted that she was reading the book.

One fan said, "Honestly i think Kristen Stewart. She can act, and the paleness."

Other actresses that are widely associated with the role are "Game of Thrones" star Emilia Clarke, Emma Watson, "Gilmore Girls" star Alexis Bledel, Lily Collins, and "Desperate Housewives" star Lyndsy Fonseca.

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