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 Blue Ivy Carter Wears Gold Ball Gown and Minidress at 'Mufasa' Premiere How "The Dress" Became an Illusion Unlike Any Other Scientific American Why is it so hard for people to see black and blue?' Salvation Army uses 'The Dress' to talk about domestic abuse Orange County Register