How can I recognize my sisters at my wedding?

[MHelfRMU]

I'm getting married and I want to recognize my sorority sisters during the ceremony...but how?!?

Zeta Tau Alpha and my sisters have been a huge part of my relationship and my college experience. I am getting married in May shortly after graduation, and I want to involve all the girls that I have invited in the ceremony somehow. I plan on seating them all last and putting them in reserved front rows at the ceremony, but what can they wear to be recognized as special people, and not just late guests? I also do not want them to have to wear specific clothes, just a pin or corsage or something that denotes them as special. Our colors are turquoise and gray, our flower is the white violet (but it would be far too expensive to get everyone a white violet to wear on their dresses), and our symbols are a crown, a bunny and a strawberry. Help me figure out something that will be elegant and give them the recognition they deserve!