Bergen County’s first upscale mall, the 500,000-square-foot Fashion Center defined itself by its exclusivity.Among the specialty shops filling its initial 25 storefronts were high-end furnisher W&J Sloane, upscale shoe store Andrew Geller and tony Danish silverware shop Georg Jensen. For private label apparel, women had Peck & Peck and Ann Taylor. Men had Rogers Peet and, later, Brooks Brothers.