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 So I searched up the black and blue dress : r opticalillusions The dress was a viral online phenomenon in 2015, centered on a photograph of a dress that people disagreed on whether it was blue and black or white and gold. Within a Shop Kristen Yellow & Blue 3D Wedding Dress Brides & Tailor The Dress: Color debate rages on the Internet East Bay Times Neuroscientists Explain Discrepancy Behind "The Dress" Illusion