Isabel Marant is practically synonymous with insouciant, Left-Bank-bohemian chic, and Etoile is the younger and more wearable — but equally cool — sister of the main line. It's full of relaxed tops, romantic dresses, and plenty of Isabel's signature ruffles and lace. The Viviana top is no exception with a mandarin collar, flowing sleeves, and a flattering stitching at the waist for a subtle cinch.