He was tailor-made for both walks of life; raised to be equally at home with the racetrack cavalcade, or the catwalk parade. From the outside, fashion and the Turf perhaps share their most obvious bond in pageant: all those shimmering silks, all those sleek creatures. To Andrew Rosen, however, it's a more internal thing. Outlook, not aspect. In both cases, he explains, you're adding one plus one and hoping to get four. "Or six, or eight," he says, smiling. "So, it's all about anticipating the future. In the clothing industry,...