Whatt do i wearr ????

tommarow night is the valentines day dance. alot of ppl are wearing tanks and shorts with flipflops but its going to be freezing soo my mom wont let me wear that. but i dont know what else to wear. ppl are wearing dresses but the dance is casual. other people are wearing skirts and other people are just wearing t-shirts and jeans. i cant buy anything cuz its tommarow night and my birthday is monday so i have to stick with the clothes i have. i have jeans, sweatpants, roll capris, jean capris, tshirts, tankss, strapless shirts. and i really dont want to wear red and pink cuz i know everyone will and dark colors wont work because the lights arent off but they are dimmed. soo please hellpp mee ft !?!?!?!?!?!?!?!?!?!?!?!?!?!?