Lupita Nyong'o, Gwendoline Christie added to new Star Wars movie cast

Three months after winning an Oscar for her role in 12 Years a Slave, actress Lupita Nyong'o has been picked to join the cast of the next installment in the Star Wars franchise along with Gwendoline Christie, best known for playing the hulking Brienne of Tarth on HBO's Game of Thrones.

Nyong'o won Oscar for her role in 12 Years a Slave, Christie plays Brienne of Tarth on hit HBO series

Three months after winning an Oscar, Lupita Nyong'o is going to a galaxy far, far away.

The Walt Disney Co. announced Monday that Nyong'o is joining the cast of Star Wars: Episode VII. The 31-year-old actress became a breakthrough star for her award-winning performance in 12 Years a Slave.

Also added to the cast was Gwendoline Christie, best known for playing the hulking Brienne of Tarth on HBO's Game of Thrones.

When the principal cast of "Episode VII" was announced last month, the lack of women raised some eyebrows. Nyong'o and Christie join an ensemble that includes John Boyega, Daisy Ridley, Adam Driver, Oscar Isaac and Andy Serkis.

Production is underway for the movie, which is being directed by J.J. Abrams. It's slated to open in December 2015.