Optical illusion renews blue and black dress debate nine years on Express.co.uk How "The Dress" Became an Illusion Unlike Any Other Scientific American A woman in a striped dress stands from behind in a room with a black and white checkerboard optical illusion creating a tunnel effect, accented by blue abstract shapes. on Craiyon 10 years ago today, this dress was posted online, turning into a viral phenomenon. Viewers couldn't decide if the dress was blue and black, or white and gold. It was later confirmed Black Dresses for Women Australia Blue Illusion Blue and Black Dress Illusion Explained