Jessica Simpson is unfailingly loyal to her hairdresser/constant companion Ken Paves – but her loyalty may have cost her a high-profile spokesmodel gig. According to Page Six, Jessica was set to be the face of Prada's Miu Miu line, a job that went to Lindsay Lohan, but the photographers for Miu Miu nixed Jess because of an earlier incident involving a cover shoot for Vanity Fair.

Several months ago, according to a source, the photog team of Mert Alas and Marcus Piggott wanted to use their own stylists for Vanity Fair, but Jessica insisted on using Paves, so the shoot didn't happen (though there were also rumors that the cover appearance was cancelled because Ms. Simpson wouldn't dish on Nick Lachey.) And so the bad feeling carried over to the Miu Miu campaign. Says Simpson's rep, "She could not have done the campaign anyway because she has her own clothing and shoe line."