Rebecca Minkoff is the chief creative officer of the eponymous designer brand. Courtesy of Rebecca Minkoff This as-told-to essay is based on a conversation with Rebecca Minkoff, a 45-year-old fashion designer, cofounder of the Female Founder Collective, and former "Real Housewives of New York City" cast member. It has been edited for length and clarity. My public image is, I think, very glamorous. In reality, there's a lot of nitty-gritty dirty work in a typical day. At work, I'm still tryin...