so we know the dress was black and blue BUT that's not what i'm here to discuss : r opticalillusions Plus Size Strapless Bodycon Dress Plus Size Club Dresses 2020AVE 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 The dress was a 2015 online viral phenomenon centred on a photograph of a dress. Viewers disagreed on whether the dress was blue and black, or white and gold : r wikipedia