Outfit for First Day of High School?

So i start my freshman year:))) in a few weeks, and i have no clue what to wear. I was really hoping some of you polyvore pros could throw something together to help me out, but if you just wanna type out your suggestions, thats cool too. Just keep in mind that my style is boho and earthy, pretty laid back with a Cali vibe (think the hills, or lc!! haha); not edgy at allll. Also, i live in alabama, its pretty hot in august, so no jeans or sleeves please? thanks:)