What to write on a highschool reunion invitation?

Question

I'm helping my granny make invitaions for her 60th high school reunion. We'll be typing them on the computer and printing them onto gold stationary. What should we write? It should sound somewhere between simple and formal.

Answer 1

does she have an old year book??..or do a search of the school in the library or on the net..come up with something creative from the graduating class....like use the theme they had for there prom or something

Answer 2

and i was going to write something very sarcastic and cruel....but i can't do that to granny....good luck, i'm all out of good ideas....