The wedding industry doesn’t like change. Not doing a bouquet toss? Shocking. Don’t feel like wearing white? How dare you. Macaroon cake? Pssh. So even after smartphones and social networking have transformed our lives, they've only just begun appearing at American nuptials. “The reality is that the wedding celebration now occurs far beyond just where the bride and groom are present,” says Cathleya Schroeckenstein, editor-in-chief of WeddingBee.com, who points to Instagram, Pinterest, and Twitter as the latest guests at this season’s ceremonies. So, to that cousin who’s showing too much cleavage? Consider yourself one-upped (and, while you're at it, hide from those camera phones.) Here's what's trending next.