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. Wonder Woman? Never heard of her. @haileybieber delivered one of the night's boldest #MetGala moments in a molten gold and cobalt @ysl look that feels straight out of a fashion comic book. Tap the ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive Women's Blue Watercolor Dress 12th Tribe Is it white and gold or blue and black? The truth behind the dress debate. CooperVision Women's German Dirndl Dress Blue Gold XXL