For shoe fiends, it’s hard to top Barneys’ rainbow assortment of Lanvin ballet flats, gladiators, and peep-toe Mary Janes. And that’s just the beginning. Spread out across 3,500 square feet of first-floor space, the offerings are straight off the pages of Vogue: sky-high patent YSL stilettos, woven Prada platforms, badass Margiela boots. Recession? What recession?