Designer with celeb following loses brand in deal gone sour

As fashionistas take over the Big Apple during Fashion Week, designer Cynthia Vincent is feeling a little left out. The Los Angeles-based designer, whose apparel, shoes and accessories sold under the Twelfth Street by Cynthia Vincent brand are carried in high-end stores like Bloomingdale’s, Neiman Marcus and Barneys — and embraced by stars like Heidi...