so we know the dress was black and blue BUT that's not what i'm here to discuss : r opticalillusions Ayolanni Holiday Party Dresses for Women A Line Black Short Off The Shoulder Solid Sleeveless Dresses Girls Dresses 2x 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 Cute Black Short Prom Dress,short Party Dress