Prom Hairstyles Concept Long Hair, To ensure the splendid hairstyle can last the whole night, you can apply some hold hairspray to keep it in style longer. In addition, you can add some bangs or not according to your face shapes and dress. Here are some popular and fabulous long hairstyles for proms, from which you can choose the most suitable one and make others admiring and leave others an unforgettable impression on others.Braid Side Updos /ViaThis is a causal yet cute braided up-style. The top loose braid adds much fun and coolness to the whole hairstyle. For more charming effect, you can decorate with some shining pins or fresh flowers at the weave holes.