Lionsgate announced today that Natalie Dormer has joined the cast of The Hunger Games: Mockingjay Part 1 & The Hunger Games: Mockingjay Part 2 as the character Cressida.

Dormer currently stars as "Margaery Tyrell" on HBO's Game of Thrones and will be seen in Ron Howard's Rush this September, as well as Ridley Scott's The Counselor in October. She has also completed production on the indie film Posh.

Dormer is represented by Untitled Entertainment, UTA and United Agents.

About The Hunger Games: Mockingjay Part 1 & The Hunger Games: Mockingjay Part 2

Directed by Francis Lawrence and based on the novel "Mockingjay" by Suzanne Collins, The Hunger Games: Mockingjay Part 1 & The Hunger Games: Mockingjay Part 2 make up the third and fourth installments of heroine Katniss Everdeen's (Jennifer Lawrence) 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.

The blockbuster first installment of The Hunger Games franchise is the 14th highest-grossing North American release of all time and grossed nearly $700 million at the worldwide box office. The second film, The Hunger Games: Catching Fire, opens worldwide on November 22, 2013. The Hunger Games: Mockingjay Part 1 will be released worldwide on November 21, 2014 and The Hunger Games: Mockingjay Part 2 opens November 20, 2015.