There are several great ideas I've seen so far - everything from boutonnieres shaped like colorful fall leaves to pine cone and dried flower bud boutonnieres. If your are a DIY bride, you can make your own fall boutonnieres and even make matching barrettes or clips for the bridesmaids. Here are some of my favorite boutonnieres ideas I have come across for this coming fall!
Love the examples, the colours work so well together.
The bottom left one is the best one, really rustic look.