This letter invites someone to a surprise party.
1234, Main Street
Boston, MA 02123
08 April, 2005
<Recipient Address Goes Here>
Please join us for a surprise party in honor of <name>. We will be celebrating <name>'s <occasion>. It should be a great time, but only if everyone is very careful not to let the cat out of the bag!
The party will be held at <location> on <date and time>. Food and drink will be provided.
Please RSVP on or before <date> by calling <phone number>. I look forward to seeing you there!
encl: <List of enclosed items goes here>