Is This Dress Blue And Black Or White And Gold? Here's What The Experts Say 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 Optical illusion renews blue and black dress debate nine years on Express.co.uk Reddit Blue Black White Gold Dress Explained What Colour Is The Dress? Explained The dress was black and blue, but the conditions of the photograph caused many to perceive it as white and gold, creating debate. Within a week, more than ten million tweets had