Eleven years ago, a single photo posted on Tumblr sparked one of the biggest internet debates of all time. The dress instantly divided the world, some swore it was white and gold, 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 The dress: Celebrities join the white and gold or blue and black debate Daily Mail Online Sunshine embroider flowy net dress TheDress couple: 'we were completely left out from the story' BBC News ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive