Hilton flew into a rage at a Las Vegas club in August when her childhood pal and protegee ignored and publicly mocked the heiress. "Paris is upset at Kim -- but it's 100 percent jealousy," a source tells Us of Hilton. "Kim is not only doing what Paris did, she's doing it better."
Paris Hilton and Kim Kardashian
Hilton flew into a rage at a Las Vegas club in August when her childhood pal and protegee ignored and publicly mocked the heiress. "Paris is upset at Kim -- but it's 100 percent jealousy," a source tells Us of Hilton. "Kim is not only doing what Paris did, she's doing it better."