Collins plays the famous damsel in Mirror Mirror: The Untold Adventures of Snow White, with Julia Roberts as the evil queen, while Twilight star Stewart tackles the same role in Snow White & The Huntsman, opposite Charlize Theron.
Mirror Mirror will be released first this month (Mar12), while Stewart's movie will follow later this year (12), but The Blind Side actress is adamant the two stars have laughed off any potential competition.
She tells reporters in Los Angeles, ""It's funny, I mean, they are so different, they couldn't be more different. Kristen and I have laughed about the fact that we're apparently 'rivals'. And it's just funny to us. I'm excited for her and that version is so utterly different than ours. I think that people are going to get different things out of each one...
""There's always two sides to a story, so it's interesting to see two different versions. (Mine) is more of like a comedic adventure, (and hers is) more edgy and dark.""