Mickeys Not So Scary Halloween Costume Help?

I would first look up an age limit, because it isn't worth the risk if you aren't young enough for it. Next, I would go dressed like that and bring a picture of a kingdom hearts thing with her on it (so they can see what she is from) and tell the people if they ask that she is from a Disney game. There is no reason why they should stop you if you are dressed as a Disney game character. Just make sure you can stay covered while wearing it. You might also consider wearing a thin, flesh-colored shirt underneath.