This costume is bone-chillingly good.

What you need to do: If you're good at makeup, use your creativity to create a skeleton. If not, have a look at this tutorial [1] to help you out. Makeup or not, the costumes are easy as can be! Either pick up an oversize skeleton t-shirt (sold almost anywhere throughout October) or create your own skeleton top using a white fabric marker on a black shirt, up to you!