"Game of Thrones" actress Natalie Dormer has been cast as Cressida in "The Hunger Games: Mockingjay Parts 1 & 2." Reuters

Actress Natalie Dormer has joined the cast of “The Hunger Games: Mockingjay Parts 1 & 2.” Lionsgate announced the news today on Twitter.

According to USA Today, Dormer will play Cressida, a director from the Capitol who joins up with the rebellion.

Here’s what “The Hunger Games” wiki has to say about the character: “Cressida is a resident director from the Capitol who joined the rebellion along with her camera crew Castor and Pollux as well as her assistant Messalla, who had also joined the rebellion, to District 13 when they fled the Capitol. Cressida was told by Plutarch to follow Katniss throughout her journeys in the rebellion so they could make numerous propos across Panem to encourage strength and morale in the rebels.”

“The Hunger Games: Mockingjay Parts 1 & 2” will be released in two separate installments in 2014 and 2015. The first film has an official release date of Nov. 21, 2014, while “Part 2” is due out on Nov. 20, 2015.

Director Francis Lawrence -- who helmed “The Hunger Games: Catching Fire” -- will return to direct the “Mockingjay” sequels.

The official synopsis for “The Hunger Games: Mockingjay Parts 1&2” states that the films “make up the third and fourth installments of heroine Katniss Everdeen’s journey as she leads the districts of Panem in a rebellion against the tyrannical and corrupt Capitol. As the war that will determine the fate of Panem escalates, Katniss must decipher for herself who she can trust and what needs to be done, with everything she cares for in the balance.”

Dormer is best known to television audiences for her role as Margaery Tyrell on the hit HBO series “Game of Thrones.” In the past couple of years, she appeared in “Captain America: The First Avenger” and “W.E.” Dormer first arrived on the scene back in 2007 when she was cast as Anne Boleyn in the Showtime series, “The Tudors.”

Meanwhile, “The Hunger Games: Catching Fire,” the second installment in “The Hunger Games” trilogy, is scheduled for release Nov. 22. The first film, “The Hunger Games,” made nearly $700 million worldwide.