Word the invitation so that your guests understand the formality and dress code for the occasion, but don’t send them out too early. “You don’t want to make anyone suspicious,” says Amber Moon of Amber Moon Design. “Go all out with the stationery, so that the fake event looks legit.” Etiquette calls for wedding invitations to be sent six to eight weeks in advance, and two to four weeks prior to a social gathering. “However, in this case, invites can be sent out four to six weeks before the event,” says Moon.