What should i wear to my senior breakfast/superlatives?

Our senior breakfast is on December 19. We've already started voting for best dressed, biggest flirt, etc. I have been nominated for three categories so I would like to look nice in case I win but idk what to wear -_- Its going to be at hotel and we'll be dancing when the ceremony is done. I need something nice but i don't want to look overdressed and it can't be too revealing. Please help?!