How do i make a simple disney costume on short notice?

We are having a spirit week at my school and one of the days is disney character day!! Me and my friends don't know what to do but we want it to be simple and more of the classic disney! By the way this is high school..... Thanks!|||How about going as Dumbo? Wear grey sweats, and then fashion ears and a trunk out of either cheap grey material or from grey cardboard. Just make sure that the ears are huge.|||Wendy, you could just get a blue nightgown and put your hair up in a ponytail with a blue ribbon... A blue summer dress could serve as Belle or Alice, if you can find a white apron... Those are the most simple Disney character costumes I can think of :)