Cannes Red Roses Black Dress Pink House Boutique Optical illusion: Dress colour debate goes global BBC News ANGIE FLORAL PRINT MINI DRESS PURPLE LEOPARD BOUTIQUE Ten years ago, a photo of a dress posted on Tumblr sparked a massive debate: was it blue and black or white and gold? Millions argued online, and even celebrities joined in. Scientists later explained Is That Dress White and Gold or Blue and Black? The New York Times 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