Margaery Tyrell will be making her way from Westeros to Panem.

'Game of Thrones' actress Natalie Dormer has joined the cast of the last two installments of the 'The Hunger Games' trilogy, 'The Hunger Games: Mockingjay Parts 1 & 2.'

According to USA Today, Dormer will portray Cressida, a Capitol dictator who joins the heroine Katniss (Jennifer Lawrence) in an uprising. The 31-year-old British actress is best known for her role on 'Game of Thrones' as the intelligent wealthy power player and prospective queen Margaery Tyrell.

Her character was first introduced in the second season and was featured prominently in the third season of the wildly popular HBO series. 'Game of Thrones' is currently filming its fourth season.

The casting news comes before the release of the second 'Hunger Games' movie 'Catching Fire,' which premieres worldwide Nov. 22. 

Dormer's performance on 'Game of Thrones' has presumably led her to recently star in high-profile TV shows and movies. She recently guest starred on three episodes of the CBS Sherlock Holmes drama 'Elementary.' 

On 'Elementary,' Dormer portrayed Irene Adler, the iconic love interest of Sherlock Holmes. She can also be seen in Ron Howard's 'Rush' in September and Ridley Scott's 'The Counselor' in October.

Dormer was first recognized in the U.S. in 2007 for her portrayal of Anne Boleyn on Showtime's The Tudors. In joining 'The Hunger Games' cast, Dormer will star alongside many actors who have appeared or are set to appear in the popular young adult trilogy, which is based off of the novels by Suzanne Collins.

The long list includes the series star Jennifer Lawrence, Elizabeth Banks, Philip Seymour Hoffman, Woody Harrelson, Josh Hutcherson, Liam Hemsworth and Jena Malone. 

'The Hunger Games: Mockingjay -- Part 1' is set to premiere Nov. 21, 2014. 'The Hunger Games: Mockingjay -- Part 2' will be released Nov. 20, 2015.