Lupita Nyong'o, Gwendoline Christie Lupita Nyong'o, Gwendoline Christie

Oscar winner Lupita Nyong'o and Game of ThronesGwendoline Christie have joined the cast of Star Wars: Episode VII, Lucasfilm announced Monday on

There's no word on who either actress will be playing. Nyong'o rose to fame last year with her role in 12 Years a Slave, for which she won a Best Supporting Actress Academy Award. Christie plays Brienne of Tarth on Game of Thrones and also stars in the upcoming Hunger Games: Mockingjay — Part 2.

Star Wars: Episode VII cast revealed!

These are the latest additions to the cast of Episode VII, which is being directed by J.J. Abrams. As announced in April, the cast will feature newcomers John BoyegaAdam Driver,Oscar Isaac and Andy Serkis, as well as original stars Harrison FordCarrie FisherMark Hamill and Peter Mayhew, among others.

The latest installment in the Star Wars franchise will take place 30 years after 1983's Return of the Jedi.

Star Wars: Episode VII is scheduled to hit theaters on December 18, 2015.

Watch This Tonight: Find out why Mistresses is our editors' pick for Monday: