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 Viral Blue and Black or White and Gold dress marks 10 years 10 years ago, a simple photograph of a dress sparked a global debate unlike anything seen online before. Posted in 2015, the image caused people to argue intensely over whether the dress US woman finds 2015 viral optical illusion dress US woman finds optical illusion dress that became viral sensation in 2015 at a yard sale India Today