Teri Hatcher has the perfect hair style for prom.  Her style features all over bouncy waves from the eyebrows down to the ends.  The crown area has height and sweeps from one side to the other from a deep side part. 

 

Add long diamond earrings and combine the look with a silky shiny prom dress for the ultimate look.

 

You should experiment with your hair about 1-2 weeks before the prom to make sure that you can get the curly look exactly the way that you want.

 

Another option is to schedule a trial run at your beauty salon.  Getting a trial hair style before the prom allows you to see how you will look with your prom dress and also to see how the style will hold up throughout an evening of dancing.