The key to finding your style is to be yourself. Don't try to change who you are, just improve on the personal style you've already got.
Don't let the bride dress you up like a Ken doll if you're not a tuxedo guy. But if you've always dreamed of getting married in Armani, speak up! It's your day too.
You might be surprised what you can find on ebay or at a vintage store. My husband was fixated on a Jil Sander suit he saw in Wallpaper, and I managed to find it used for $200.
I recommend GQ's Style Guy column for the basics on suits and blazers, plus formalwear advice that will keep you from looking like a waiter or a Whiffenpoof. Janie Bryant also has some great, no-nonsense advice.
(Photos by Stephanie Land)