All of the costume ideas ahead start with a black dress, even if they do require some extra layering, plus face makeup, a wig, or additional accessories ... or loose, long or short.

If your dress is sheer, going all black with accessories won't ever feel too heavy. Plus, patent-leather loafers add some dimension. If you opt for a t-shirt-style black dress, stick to a downtown ...

Keep it daytime-appropriate and throw on a basic cotton tee or a comfy long-sleeve top ... Keep a classic black dress simple and chic with classic accessories: black pumps, iconic cat-eye sunnies ...