Dressgate: If you saw THAT dress as white your brain was working overtime 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 Optical illusion renews blue and black dress debate nine years on Express.co.uk 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 Is The Dress blue and black or white and gold? The answer lies in vision psychology Psychology The Guardian 1920s Black & Gold Beaded Evelyn Flapper Dress Flapper Boutique