The wording and level of formality of a party invitation depends on the formality of the event. A formal invitation may begin with "You are cordially invited to" or "Please join us for." It may also start with the names of the hosts, then say "request the honor of your presence," "request your attendance" or "are pleased to invite you to."
Formal party invitations should include the names of the people throwing the party, the date and time of the party and the location where it is being held. It should also give the reason for the celebration and what type of party it is. The invitation should tell the invitees the appropriate attire for the party and response details.
In formal invitations, the numbers, days and months in the date should be spelled out. There should not be punctuation at the ends of the lines. The invitation should provide a phone number or email address for the invitees to RSVP. If there is a deadline for replying, it should be included with the contact information. It is acceptable to state "no gifts" on an formal invitation, but an invitation should not have any requests for specific gifts or money.