The 24-year-old actress said the movie – in which she plays the title role - will be 'edgy' and 'dark', and praised director Catherine Hardwicke for her take on the children's story.
'Red Riding Hood is a classic fairy tale that we all know, and what fans can expect from this version of the story is that it's basically just a jumping-off point,' she told MTV's The Seven.
'Catherine Hardwicke has just completely turned this story into something edgy and gothic and dark, and she's clearly somebody that's very capable of turning something, everything into an extraordinary world, as we've seen before.'
She added, 'And also there's a romance aspect to the film, which isn't in the fairy tale... a lot of romance and a lot of danger. There's a wolf at the centre of the story, and it's exciting 'cause it's a whodunit.
'Fans will be surprised by the tone of the film. Catherine just completely throws it into this dark world, and it's a little scarier than it was meant to be when it was written.'
Red Riding Hood is scheduled for a 2011 release.