Luke Grimes

Frazer Harrison/Getty Images

Yet another famous face is officially joining the cast of Fifty Shades of Grey.

E! News has learned that True Blood's Luke Grimes is signed on to play Christian Grey's brother, Elliot, in the highly anticipated film adaptation.

The 29-year-old most recently appeared as Deborah Ann Woll's boy-toy in the latest season of the hit HBO series.

The exciting casting news comes just one day after it was announced that they found an actor to portray the lead role—the insanely hot Jamie Dornan.

Hmmm…Dornan and Grimes do look like they could be brothers. Genetically gifted brothers, of course.

Jamie Dornan, Luke Grimes

Marion Curtis /; Frazer Harrison/Getty Images

E.L. James was the first to break the news that Dornan was officially replacing Charlie Hunnam for the coveted (and controversial) main role of Mr. Grey.

She wrote: "Stow your twitchy palms ladies… our man is here. Welcome to #TeamFifty @JamieDornan1 x"

The 31-year-old Northern Irish actor was rumored to have been the front-runner after he nailed (pun intended) his audition on Friday, Oct. 18.

"He had a really good read," a source exclusively told E! News, noting that the studio wasn't "worried" about Dornan's chemistry with costar Dakota Johnson.

"They think [Dakota] could handle whoever the guy is."

Jamie Dornan, Dakota Johnson

Tim Whitby/Michael Buckner/Getty Images

Novelist and screenwriter Bret Easton Ellis also gave his seal of approval on Thursday, telling his Twitter followers:

"I think that Jamie Dornan is the perfect choice to play Christian Grey in FIFTY SHADES OF GREY. Smartest casting decision in a long time."

And now that the erotic novel turned motion picture has found its two leads, we can't wait to see who else gets cast as supporting roles.

The clock is ticking on finalizing the who is playing who, too.

Reports claim that filming for the erotic flick will begin on Nov. 5 in Vancouver.

(E! and Universal Pictures are both part of the NBCUniversal family.)

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