What's the best way to pin a boutonniere without destroying the tux? I prefer to use 2 bout pins and start from behind the lapel keeping the pins out of sight. Both pins should be directed into the top of the bout stem without allowing the pin point to exit the boutonniere. For ring-bearers 4 years old or younger, I use safety pins instead of straight pins.What is the appropriate side to pin one on? I always pin to the left lapel. Boutonnieres can not be worn on any type of Military Uniform. Who typically wears them? Groom, Groomsmen, Ring-bearers, Fathers, Stepfathers and Grandfathers of both the Bride and Groom. Ushers only if in a suit or tux. Brothers, Uncles and relatives of the Bride and Groom who are not in the ceremony do not need to have a boutonniere. There are always very important family members and friends that are worthy of being honored at the wedding with a boutonniere or corsage, just keep in mind that extending this honor to one side of the family means you need to extend it to the other side of the family as well. Of course all cultures have their own traditions and etiquette, some including all family or sponsors of the wedding. Maile Lei or Ti Leaf Lei is a great alternative as well. What are the different styles and which ones are most popular? Over the years Callas have been the favorite flower for boutonnieres by most Brides and Grooms due to their clean and sophisticated form. Boutonnieres should always compliment the style and design of the bouquets. Where a traditional boutonniere hosts a flower as it's focus, many Grooms prefer a more masculine style consisting of natural elements like foliage, berries, aldercones or herbs. For a tropical or beach theme wedding, a Maile lei can be worn in place of a bout.