The dress was black and blue, but the conditions of the photograph caused many to perceive it as white and gold, creating debate. Within a week, more than ten million tweets had 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 ZAPAKA Women Green Plus Size Prom Dress with Slit Tulle A line Spaghetti Straps Appliqued Corset Long Party Dress with Sequins Sequin Dark Green Mermaid Plus Size Floor length Prom Dress with Appliques In February 2015, a photo of a striped dress posted online unexpectedly turned into a worldwide argument. Some viewers swore it was blue and black, while others were convinced it was white