Fifteen years ago, designer Stacy Frati launched Sweet Pea after coming across a quote from Coco Chanel: "To achieve great things, we must first dream." Imbued with a dose of its muse's whimsy and Frati's signature embellishments and bright prints, Sweet Pea's pieces are instant pick-me-ups. Case in point: this lightweight, gauzy pullover covered in a peppy troupe of polka dots.