What should I wear for the first day of school?

Hi, I'm almost 14, and I'm stressing over what I should wear tomorrow. I have dark wash skinny jeans& jeggings, and light flare jeans. I have this pink flowy top, dark blackish grayish cardign, express sweater/shirts. it scoops in the front, either a vibrant dark blue or turquoise, black or grey leggings, flip flops, ugg boots, tanktops, some hollister shirts. Tomorrow is supposed to be super hot, but I don't want to wear shorts, any ideas?