According to tradition, it is considered bad luck for the bride to be seen by the groom before the ceremony. As a matter of fact, in the old days of marriage by purchase, the couple rarely saw each other at all, with courtship being of more recent historical emergence.
Today, many brides will wear two garters. The one she wishes to keep as a memento of her wedding day, possibly to be displayed on her grooms rear view mirror, and another, to be retrieved and tossed by the groom to all the young unmarried men attending the event. The "toss garter" is likely to be in the color of the wedding, and not as elaborate as the more decorative garters kept by the bride. Whoever catches the garter will be the next to marry.
The Groom's Cake