Westeros and a galaxy far, far away are colliding! Game of Thrones breakout Emilia Clarke is joining the Star Wars Han Solo spin-off.

Clarke will star opposite Alden Ehrenreich and Donald Glover, who play Solo and fellow smuggler Lando Calrissian, respectively.

All three leads endured gruelling testing sessions for the stand-alone movie.

The tests date back to the beginning of the year when thousands first began meeting and reading for the role of the title character that Ehrenreich eventually nabbed.

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Selma

and

Creed

star Tessa Thompson,

Power Rangers

actress Naomi Scott and Zoe Kravitz read for the female lead in October.

Another group, which included Clarke, Dope's Kiersey Clemons, fellow Thrones actress Jessica Henwick and Emerald City star Adria Aronja tested in London.

Execs and directors Phil Lord and Chris Miller, who are also penning the script, had tested another group in September but decided on one more round after struggling to make their choice.

The movie will be set prior to Star Wars: A New Hope, like the other upcoming Star Wars stand-alone project, Rogue One, which hits theatres on December 16.

Kathleen Kennedy and Allison Shearmur are producing the film, which is expected to begin production in January.