How should I wear my hair tomorrow?

It's for Sunday School/ Hebrew School/ Youth group meeting. It's like a very relaxed temple, and we usually just wear like sweats or pj's. I usually wear jeans and a hoodie, but tomorrow I wanna start wearing sweats too like some of the other girls. So, how should I wear my hair? Haha(: I know it's not really important, but I HATE wearing my hair down with pj's! So like a high pony, messy bun, side pony, pig tails, braids, WHAT?