"The three-button isn't as big in weddings as it is in fashion, but we've seen a lot of excitement about the two-button," said Paul. And the one-button, while not quite as trendy, is even easier to wear, which makes it a great option for the fathers. "A lot of times, the groomsmen are fine with the two- or three-button, but not Dad. It's absolutely fine to put the fathers in a one-button and put the younger guys in something trendier."

Another trend that's just booming is the chocolate brown tuxedo. "When I first saw this three years ago, I thought, 'That's the new black.' It's just as elegant and formal, and it pairs so well with the ivory and champagne colors we're seeing in bridal. Originally, not everyone had the right shoes, but we now carry brown shoes as well as black."

The brown shoes also work well with a khaki-colored tux, which is another trend coming into play. "It's a good option for couples who are having a less formal wedding -- we don't sell much gray because the khaki is so flattering. It's also marketed toward destination wedding grooms."