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 A scientific tale of two dresses CNN Gorgeous Yellow Long Mermaid Tassel Off the Shoulder Satin Backless Prom Dress with Ruffles The White and Gold (No, Blue and Black!) Dress That Melted the Internet The New York Times