Prom hairstyles-half up

Hello--My prom is in 2 weeks and I have no idea what to do with my hair. I have a strapless dress so I want to wear it half-way up. My hair is long and very straight. Does anyone have any suggestions?

Hey..i think that you should..if you want it half up and half down then curl the top half and pin it up so that the curls fall down the sides of you face and then for the back..have curls at the bottom of you hair..not the whole strand of hair though juss the bottoms..and put little jewls in the top that go with you dress..and have two pieces coming out the front of your hair..you know in the face type thing..that is just an idea..