Today’s the day! Today, you’ll know for sure whether or not you’re going to get married! This from wikipedia:
In North America, unmarried women were frequently told that if they sat in a darkened room and gazed into a mirror on Halloween night, the face of their future husband would appear in the mirror. However, if they were destined to die before they married, a skull would appear. The custom was widespread enough to be commemorated on greeting cards from the late nineteenth and early twentieth centuries.
Sounds like fun! Go for it, girls!