How "The Dress" Became an Illusion Unlike Any Other Scientific American Neuroscientists Explain Discrepancy Behind "The Dress" Illusion Gold and Silver Foil Optical Illusion of a Woman Stable Diffusion Online The Dress puzzlewocky 10 years since THE DRESS blew up Internet. Two thirds of people saw white and gold. Its an optical illusion caused by weird lighting and an overexposed background. It Is actuallylly blue and black.