Blonde actress Jennifer Lawrence has been cast as the brunette heroine Katniss Everdeen in the film adaptation of the bestselling book The Hunger Games. Some fans were initially upset about the casting, but Lawrence has won over readers of the teen trilogy by dying her hair brown for the role. She showed off her new brunette hairstyle on the David Letterman show and discussed the movie, which has been compared to "the new Twilight." Lawrence made it clear that the two movies are very different, stating, "We don't suck blood; that's sick. It's not a vampire deal." She also talked about the violent and futuristic nature of the film, in which kids are selected from their home districts to fight in a deadly arena. Lawrence has recently risen to fame, being nominated for an Oscar for her role in the indie movie Winter's Bone. She has also been in demand for magazine photoshoots, where she admitted she is still getting used to her newfound celebrity status. Despite her fame, Lawrence still maintains some down-to-earth habits, such as choosing a Philly cheesesteak over a salad. While she is excited about The Hunger Games, Lawrence admits to feeling nervous about taking on such a highly anticipated role and fears messing it up. However, she ultimately accepted the role with the encouragement of her mother and her love for the story. The Hunger Games is set to be released next spring.