When she's not trying to manipulate her bastard fiancee, King Joffrey, or stay out of Cersei's way, 'Game of Thrones' actress Natalie Dormer (aka Margaery Tyrell) is busy landing big-screen gigs. The latest additions to her resume are biggies -- 'The Hunger Games: Mockingjay - Part 1' and 'Part 2.'

Lionsgate announced over Twitter that Dormer will play Cressida, one of the lead characters to come out of District 13, home base for the rebellion. Her character follows Katniss (Jennifer Lawrence) around with her camera crew to snap footage of her being the symbol of hope, which she then relays to the citizens of Panem.

In 'The Hunger Games: Mockingjay - Part 1' and 'Part 2,' Katniss must lead a rebellion against the corrupt Capitol with the help of District 13, once thought to be wiped out in the prior war. Julianne Moore, who can be seen in the upcoming 'Carrie' reboot and as the wicked witch in 'Seventh Son,' was recently in talks for the role of President Coin, leader of District 13. 'Catching Fire' newcomers Philip Seymour Hoffman, Jena Malone, Sam Claflin and Jeffrey Wright are also expected to stick around for the two-part 'Mockingjay.'

'The Hunger Games: Mockingjay - Part 1' is set for release on November 21, 2014, and 'Mockingjay - Part 2' is set for November 20, 2015. Dormer can be seen in the nearer future in Ron Howard's 'Rush' and Ridley Scott's 'The Counselor.'