The Big Apple has its fair share of designer shoe salons, but how many can claim their own ZIP CODE? Today, Saks Fifth Avenue unveils its new heel emporium on the eighth floor - a shoe department so big, it will be the first store floor granted its own digits by the U.S. Postal Service: 10022-SHOE. By the way, there will be stamps. But more importantly, there will be shoes about 10,000 pairs, nearly double what Saks used to carry on the fourth floor. Joining their current roster of 38 favorite designers, including Prada and Jimmy Choo, will be newcomers Alejandro Ingelmo, Azzedine Alaia, Brian Atwood, Costume National, Derek Lam, Gianvito Rossi, Jonathan Kelsey, Nicole Brundage and Sergio Rossi. And you will shop in glam, modernist style: The futuristic redesigned space with curvilinear displays and jewel-toned upholstery will feature a 70-foot-long curving wall of handblown Murano glass bubbles. There will be a shoe repair and refurbishing service, a Charbonnel et Walker chocolate café and a VIP back room for private shopping with an adjacent fitting room. An express elevator will whisk shoppers straight to the floor. That's my next stop after Hollywould.