After a decade of outfitting hip, sophisticated ladies in her playfully patterned designs, Milly creator Michelle Smith opened her first U.S. flagship (the other is in Tokyo), appropriately located on the Upper East Side. The vibrant walls of the spacious boutique are a nod to Smith’s love of retro art and feminine fashion. Printed-silk maxidresses with gold chain halters ($395) are perfect for summer weekends in the Hamptons, while metallic leather shoulder bags with bamboo closures ($345) will keep you hands-free during strolls down Fifth Avenue. Complete your outfit with touches from Milly’s brand-new jewelry collection, such as mod gold flower drop earrings ($95) and statement-making multicolored necklaces ($185).