Oscar-winner Lupita Nyong'o and Game of Thrones star Gwendoline Christie are the latest big names joining the cast of Star Wars: Episode VII.

Lucasfilm announced on Monday that the two actresses would join original cast members Harrison Ford, Carrie Fisher, Mark Hamill, Peter Mayhew, Kenny Baker and Anthony Daniels in the film; along with saga newcomers Adam Driver, John Boyega, Andy Serkis, Domhnall Gleeson, Oscar Isaac, Daisy Ridley and Max von Sydow.

"I could not be more excited about Lupita and Gwendoline joining the cast of Episode VII," Lucasfilm president Kathleen Kennedy said in a press release. "It's thrilling to see this extraordinarily talented ensemble taking shape."

Following her Oscar win for 12 Years a Slave, Nyong'o starred opposite Liam Neeson in Non-Stop, and in addition to Star Wars, which hits theaters on December 18, 2015, the actress will also voice a character in the upcoming "Jungle Book" remake.

Christie, who plays the warrior Brienne of Tarth on Thrones, will star in parts one and two of "The Hunger Games: Mockingjay" before "Star Wars: Episode VII" hits theaters.

It is unknown what characters or types of characters the actresses will play.