The dress was a 2015 online viral phenomenon centred on a photograph of a dress. Viewers disagreed on whether the dress was blue and black, or white and gold : r wikipedia Eleven years ago, a single photo posted on Tumblr sparked one of the biggest internet debates of all time. The dress instantly divided the world, some swore it was white and gold, Optical illusion renews blue and black dress debate nine years on Express.co.uk so we know the dress was black and blue BUT that's not what i'm here to discuss : r opticalillusions Windsor Shelly High Slit Glitter Knit Formal Dress at Hamilton Place in Chattanooga, TN Doria Formal High Slit Glitter Dress Conean