Updo a la Kate Middleton - just position a little more to the side though...
Eva Longoria: Low Chignon - Celebrity Hair How-Tos - Shape Magazine - Page 15
Mila Kunis' modern french twist - idea to change hair up for the reception or halfway through the reception perhaps after sweating from dancing?
Love the front and the back, but a little less disheveled maybe
Classic Updos for Prom