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 Sparkly Gold Design Evening Party Dress Luxury Rhinestones See Through Sexy Women's Clothing Mesh Stretch Birthday Dresses AliExpress 200000345 Atria 6920H Elegant Stretch Jersey Mermaid Evening Gown Mia Bella Couture 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 Viral online dress debate turns 10. What colours do you see?