Isabel Marant Étoile's yellow Louna blouse is beautifully embellished with artisanal embroidery that strikes just the right balance between feminine delicacy and modern chic. It's crafted from cotton-poplin and shaped with a ruffled neckline, narrow button-fastening placket, and scallop-edged cuffs. Tuck it into checked trousers for relaxed summer-in-the-city prettiness.