Any color dress can be worn for prom but an automatically chic and timeless color to wear to prom is black. Black prom dresses can be sleek silk and slim fitting throughout the entire dress or draped and loose in a grecian fashion. The dress can be tight or loose throughout the bodice but the dress should be long because prom is a formal occasion. The hem of the dress can rise slightly above the floor but should never rise above the knee. Black prom dresses can be ruffled or fringed for some fun movement throughout the dress when dancing. Beading and embellished necklines always add interest to a black prom dress because sparkling and shining detail really pops off the black color.