If your itinerary of weddings to attend shows no sign of slowing down this summer, you might feel like you’re going through wedding guest looks faster than swimsuits. With every occasion a direct reflection of the couple and their tastes, no two affairs — or dress codes — are the same. But while venues may range from an indoor ballroom to a beach wedding within a single month, and clothing suggestions from black-tie to tropical cocktail to match, there’s no need to shop for a new look every time an invitation lands in the mail. Instead, invest in a few good dresses that you can see staying in your closet for a while, and give them a second (and 10th and 20th) life by rotating the accessories.