No matter whether you want to keep your costume super simple this Halloween or you just enjoy need an illuminated t-shirt to wear at night for the rest of the year, then check out this cool new Glow-in-the-Dark Evil Smile T-Shirt. This sinister black t-shirt has a huge evil grin graphic printed on the front that ominously glows blue in the dark. It's bright blue glowing face will also make entering a closet in the darkness extra creepy year round too.