It's not just iconoclasts who are suddenly wearing sneakers on their wedding days. It's important to make sure that this casual look still looked pulled together, hip, and intentional rather than just sloppy. Give him a gift certificate to Nike.com, where he can customize a pair of kicks in his wedding colors, or simply coordinate with his suit. If he's going for a more formal look on his wedding day, he could instead wear these to the rehearsal dinner, or to his bachelor party. Because every groom needs something that says, "You may be growing up and getting married, but you're still young and hip." And aren't customized sneakers better than a strange haircut or a flashy new car?