This approach, modeled as Rachel Bilson, is a more funky casual hairstyle attached to the back. Remember the dress neck, when you select a hairstyle prom. Keep your hair is very flattering if you wear a strapless dress or belt size small, as Bilson here (although I can not tolerate a bra like this dress she wears!). Keep jewelry to a minimum. I propose a large diamond earrings and hair clips, but do not overdo it with the addition of a necklace. Bracelet would be a nice touch, too.