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. The Dress Debate Black and Blue or White and Gold British Vogue British Vogue 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 Women's Dresses Chic Looks VICI Navy Bandage Midi Dress TK Maxx UK The viral "black and blue" dress, which sparked a massive 2015 internet debate, was originally posted on Tumblr by Scottish singer Caitlin McNeill. The photo, depicting a Roman Originals dress, divided viewers