What: Christian Dior's new spring sunglasses -- which range from lightweight aviators to rhinestone-studded wraparounds -- have barely hit the counters at Saks, but already . . . they're everywhere. Who's wearing them: Last week during the fashion shows, the shades helped editors like Vibe's Memsor Kamaraké and celeb stylist Patti Wilson avoid eye contact. At a recent photo shoot, Lenny Kravitz was so enamored of a pair that he kept them. The boys of 'N Sync donned the eyewear at the Billboard Awards, as did Elizabeth Hurley at Sundance. Why they have them and you don't: Do all these bold-faced names simply share the same impeccable taste? Probably not. Like bowling bags and tiny cell phones before them, the success of Dior's glasses is the happy by-product of aggressive marketing: Sixty lucky fashion editors received them from luggage label Tumi, and magnanimous Dior reps have been handing them out to trendsetters. "Next season," gushes its spokesperson, "you're going to see Dior everywhere." It's already too late.