Invitation letter for a chief guest is a very formal letter usually sent to important persons. Practice of sending formal invitation letters for chief guest is common in academic society, like on the University. From a chief guest it is usually required to deliver the welcome speech and address the attendees of the event. Since the letter to invite chief guest for college function is very formal, you should use very formal language in asking a person to be a chief guest. In the letter you should also explain why have you chosen the person to serve as a chief guest. The Letter should also incorporate the details regarding event, venue and exact date and time of the event. If you are not