I can't decide either. But I have so many ideas going through my head. I'm planning on wearing just normal clothes, nothing to big. But I want them to have the "ARTPOP" theme. I also want what I wear to be something that represents me as well.
Wear the outfit that defines you the best by you. Don't ask anyone else to pick an outfit that defines you just something you think is yourself. Otherwise wear the first thing you see in the room. Or do both, wear your favourite t shirt, some jeans or trousers and make a jacket out of the first thing you see in the room. A blanket, newspaper, forks😊 the things that could be in a room that can be made into a jacket is endless!😊