A wedding is the perfect excuse for your man to find the perfect suit, that he can hopefully wear over and over again. Bonobos is a great brand of men's clothing, and they happen to have a pretty awesome collection of suits as well. 

Here are some tips on finding the perfect fit from the team at Bonobos:

• Fit starts with the shoulders: The jacket should grab your shoulders snuggly but not be overly tight. If the shoulders fit, pretty much anything else can be adjusted.
• Length matters: To determine the appropriate length, you should be able to cup the bottom of the suit with your arms by your side.
• Show some shirt: A flexible but general rule of thumb is to have a quarter-inch of your shirt cuff showing. If you’re wearing a heavier cuff, like a French cuff, you may want to show a little more.