Remember when the internet went absolutely nuts on the colour of a dress? The dress was blue and black. The original viral poster, Caitlin McNeill, later said it was a black and blue dress Gold Formal Gowns, Short Gold Cocktail Party Dresses Gold Satin Evening Dress Elegant Formal Gown LBD Exclusive In 2015, a photograph of a dress went viral, dividing viewers over whether its colors were blue and black or white and gold. This optical illusion highlighted differences in human color perception The Dress is now a Halloween costume