ARMANI’S LATEST EXCHANGE: A|X Armani Exchange will open its 250th store on Rue Saint Catherine in Montreal on Thursday with a VIP celebration and special performance by Canadian electronic music band Dragonette. The 4,638-square-foot store is the first freestanding store in Canada to feature the brand’s latest store design, which includes industrial-style black and silver finishes, porcelain tile floors with metallic silver coats and aluminum shelves on silver-gray walls. “The new design is sleek and modern with unlimited flexibility built into store fixtures, allowing a constant ability to change with our customers’ needs,” said Harlan Bratcher, A|X Armani Exchange president and chief executive officer. A|X will also open a store in the Christiana Mall in Newark, Del., this month, and units in San Francisco and Mall at Millenia in Orlando, Fla., in August.