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. This is the kind of cotton dress you can take from day to dinner in 5 seconds flat — finished with intricate ruffles and delicate self-tie drawstrings at the waist for a subtle cinch.