School Tomorrow what to wear 90 degrees!?

I had an adorable outfit that included jeans but tomorrow it'll be 90 degrees outside! I don't own a skirts and am not gonna buy some right now. I have a pair of capris I'm going to wear they are dark blue (not jean but cotton and polyester) What top should I wear with them and what accessories? I'm going to 8th grade and I'm 5'1 and a little chubby so I usually layer my shirts. I love my legs and get good complements so those I don't mind showing off. Any other Idea's because i want to have a plan B encase and I really only have black gauchos which I like but have stubborn lint that won't come off, any tips on how to remove it? anyway a shirt and accessories would be great for that outfit also. Thank you!