Optical illusion renews blue and black dress debate nine years on Express.co.uk Verified Supplier Royal Blue And Gold Dress Handmade Afghan Heritage Outfit Alibaba.com 10 years ago today, this dress was posted online, turning into a viral phenomenon. Viewers couldn't decide if the dress was blue and black, or white and gold. It was later confirmed TheDress Blue Black, White Gold Sales are Through the Roof!!! White and gold or blue and black what colour is the dress? An eyewitness gives a definitive answer The Independent The Independent Here's why people saw the dress differently.