...theme and it should sound corny? it should be corny,fun-loving,classy and stylish.it should also be friendly and something exciting and to look forward to.
Don your best duds for a walk down the red carpet!
You are cordially invited to attend the 21st birthday bash of famed starlet (your name)\
Cocktail hour is at 5 pm
Oscar Ceremony will begin at 7 pm.
I don't know what you are planning to do at your party- I just made some stuff up. Hope this works for you and is a start!