Maisie Williams Makes Her Stage Debut in London!

Maisie Williams just celebrated the opening night of her new play I and You and there were a bunch of celebs there!

The 21-year-old actress was joined by her Game of Thrones co-stars Kit Harington and Richard Madden at the opening night performance on Thursday (October 25) in London, England.

PHOTOS: Check out the latest pics of Maisie Williams

Tom Hiddleston and Ellie Bamber were among the other VIPs at the event.

I and You is running now through November 25. Go see it if you’re in town!