From light-as-a-feather fine knits to chunky cable-knit, the Lyst collection of cardigans makes it easy to nail the layering trend. Wear little graphic-print cardigans buttoned up over shirts for easy 9-5 chic or spend weekends dressed-down in slouchy boyfriend styles. Cashmere and silk blends turn up the luxury, while print panels and color-blocking are straight off the runway.