If you’re ready to float through summer in relaxed silhouettes that feel light as air, we’ve found just the place: White House Black Market is serving up style with a side of 40% off. While you may remember this store as your prom-dress fix, it also offers surprisingly elevated pieces that take you from caravans to Cannes (with an emphasis on the caravan). And if vacation isn’t on the horizon, that’s OK; wear one of the brand’s whimsical dresses while drinking a large margarita — you’ll still