Lily Collins ‘So Excited’ to Play Snow White Opposite Julia Roberts

“Snow White was my favorite fairy tale growing up, and when I first read about the project, I was like, ‘I have to get in on this,'” Collins, 22, tells PEOPLE at WonderCon in San Francisco. “It’s such an iconic character.”

She’ll star alongside Julia Roberts, who was cast to play the Evil Queen, in Tarsem Singh’s 3-D The Brothers Grimm: Snow White. And the two leading ladies have a little competition: there’s another Snow White movie in the works, Snow White and the Huntsman, which stars Charlize Theron as the Evil Queen and Kristen Stewart as the beloved princess with “skin white as snow.”