British pop star Lily Allen has been banned from borrowing clothes from top fashion houses - because she ruins them. The Smile hitmaker admits she often leaves designers fuming after wearing their swanky shoes and gowns to parties, only to return them in tatters. She tells Cosmopolitan magazine, "I've been banned from some fashion places because I'm so crap with things. "Christian Louboutin won't lend me clothes because my dog chewed the shoes he lent me. And I got mud on a Julien MACdonald dress, so he wasn't happy!"