Kristen Stewart: Snow White in London!

Kristen Stewart pulls up her hood as she arrives at Heathrow Airport in London on Sunday (July 31).

The 21-year-old actress is in town to start filming on Snow White and the Huntsman opposite Charlize Theron and Chris Hemsworth.

PHOTOS: Check out Kristen as Snow White!

Kristen will play the title character in this version — the only person in the land fairer than the evil queen (Theron) who is out to destroy her. But what the wicked ruler never imagined is that the young woman threatening her reign has been training in the art of war with a huntsman (Hemsworth) who was dispatched to kill her.