Diffusion lines can be tricky: Too close to the original and customers will wonder what they’re paying for; too left-field and shoppers will be confused; but Preen‘s nailed the formula with Preen Line. This lightweight viscose-silk knit dress has the distinctive sexy attitude of the main collection, but at a fraction of the cost. We love the peekaboo slits on the shoulders, and the draped middle panel is a body-friendly addition for those of us without abs of steel. Plus, the dusky nude color makes it perfect for a breezy spring day, or, come fall, with tights, boots, and a shearling. Click the image to shop.

-Laura Wasson