According to Variety, she replaces Lily Rabe due to a scheduling conflict. Rabe will instead appear in Shakespeare in the Park this Summer.
Lyme is a denizen of District 13 who previously competed in the Hunger Games. She's described in the books as over six feet tall, muscular, and with an unforgettable face — a description that nails Christie to a "T."
On "Game of Thrones" Christie plays Brienne of Tarth, a woman knight persecuted both for her manly appearance, and for always falling in love with the wrong man. As the fourth season of HBO's hit fantasy series begins, she's in the relative safe haven of King's Landing... Though nowhere is truly that safe in Westeros.
Christie also isn't the first "Game of Thrones" vet to graduate to a role in "Hunger Games": Natalie Dormer, who plays Margaery Tyrell on "Thrones" will portray Cressida, a revolutionary documentarian in both Parts 1 and 2.
"Mockingjay — Part 1" will be in theaters on November 21, while filming for the second part is ongoing: actor Robert Knepper (who plays new character Antonius in the films) told us that he wouldn't start filming his role until April.