What kind of hairstyle should I wear tonight? PLEASE HELP!?

I'm going to a Manhunt party. I just took a shower so my hair is damp. Not dripping wet, but not dry yet. I'm going to wear flip-flops, jeans (maybe shorts if I get sweaty), a t-shirt or a tank top, and a sweatshirt. I want my hair to be down or half-up, no ponytails or buns please. My hair is dirty blonde, mid-back length. Thanks!