Think cocktail party by the lake — dressed up, but light and breezy for a summer evening outdoors. For her: a midi or maxi dress, a jumpsuit, or dressy separates; long and flowy is always a good call. For him: a summer suit or a sport coat with dress pants and a button-down. Ties are welcome but optional, and linen is encouraged.

Because we'll be on grass and concrete all evening, block heels, wedges, or flats will serve you better than stilettos. And since we'll be outside the whole night, please come prepared for sunshine, humidity, and the occasional Lake Michigan breeze — a shawl or light layer is a smart move for the evening chill so the party doesn't have to stop!