Look out for Kristin Cavallari, whose "Laguna Beach" launching pad has suddenly put her among the most in-demand young actresses in Hollywood. With horror flick "Fingerprints" on the way and the "Mean Girls"-like comedy "Spring Breakdown" due April 13, the ambitious blonde is pulling off a hat trick by finishing up work on a re-envisioning of a 1984 classic, "Revenge of the Nerds." "I play a sorority girl who messes with the nerds and is really mean to the nerds," the "it" girl said. "I feel kind of bad, because I love all of them. ... I love the original, and it's really been a blast. We are all just kind of young, and it's cool." Unfortunately, the new "Nerds" only has a few similar pocket-protecting lead characters — and one of Cavallari's all-time favorites is not among them. "Some of them [are the same], but there is no Booger. I'm kind of upset about that," she said. "[The remake is] pretty different. There are similar things about it, but it definitely is different. It's a lot more updated." ...