THE OC star Mischa Barton is amused by her cult fashion following - because she's dresses like a "geek" at home. The 20-year-old British-born actress insists her glamorous reputation would be in tatters if fans could see her slouching around the house at the weekend. She says, "Everyone thinks I'm glamorous, which makes me laugh because I'm pretty geeky. "On Saturday mornings I love watching cartoons in my Care Bear slippers and pyjama set. "How's that for glamour?"