Space disco cowboy. Yacht Shabbat. Burning Man Formal. Dress to Express Your Inner Spirit. More bridal couples are tossing tradition when it comes to what guests should wear. Summer is a busy wedding season. For some guests, that means boomeranging from Dive Bar Semiformal to Whimsical Garden Party. Many guests, with little guidance, are understandably frustrated and confused. Personal stylist Sophie Strauss suggests quizzing the couple when they haven't made themselves clear. She also warns clients not to veer into costume dressing, unless that's what the couple wants. Some bridal c...