What To Wear On Halloween? When it comes to Halloween, looks are everything. For those who haven't yet found a costume, there are the old standbys: Batman and Darth Vader. There are also newcomers such as disgraced financier Bernie Madoff. Jason Sandlofer, director of operations for Ricky's NYC, a New York City-based costume retailer, previews this year's hottest — and oddest — Halloween trends.