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 lillyafe 's ruched all black lace detailed look for the 79th #CannesFilmFestival is extremely gorgeous, perfect for the glamorous tone of the red carpet : @presscreaagency Dress: @adopolra_ #BellaNaijaStyle The actual dress was black and blue. The confusion came from how lighting and color perception tricked people's brains, making some see it as white and gold. It became a viral example 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