See Charlize Theron, Kristen Stewart in Snow White and the Huntsman

Credit: Universal Pictures (4)

Who's the fairest of them all?

At Comic-Con in San Diego, Calif. Saturday, producers unveiled the first images of Kristen Stewart, Charlize Theron, Chris Hemsworth and Sam Claflin in the highly-anticipated movie Snow White and the Huntsman.

Stewart and Theron, 35, played up their onscreen rivalry during the star-studded panel. "She's going to give me a run for my money," Theron told fans.

"And I'm ready for it, bitch!" she added playfully. "Let's go!"

Dressed in silver armor, Stewart looks remarkably different than her Twilight alter-ego Bella Swan. Wielding a sword and carrying a shield, the 21-year-old actress plays a less Disney-like version of the titular character.

Theron, who plays the Evil Queen, promised that the film isn't your ordinary fairy tale. "Trust me, she's dark. I'm preparing to play a serial killer," the South African actress said. "Watch out, Kristen."

Hemsworth, 27, plays the Huntsman, while Claflin, 25, plays Prince Charmant. Snow White and the Huntsman begins filming in August; it's slated to premiere in 2012.