The exact history of invitations is not known, but in the 18th Century French and English aristocrats were using them to announce social events. Today invitations are not just for the elite but anyone invited to a party. An invitation serves several purposes all based on announcing a party or event. These include who is invited, when and where it is being held, what to bring, what to where and possibly directions. Also, most invitations request an RSVP so the host will know who will be attending for food, favors and seating. Invitations are available for any party or event that you are throwing. This will make your party planning a bit more hassle free then having to make them yourself.