I've been thinking about "the dress" for 10 years. Here's what I've learned. so we know the dress was black and blue BUT that's not what i'm here to discuss : r opticalillusions Elegant Midi Length Long Lantern Sleeves Chiffon Wedding Guest Dresses Spaghetti Straps Cross Back Chiffon Wedding Guest Dress Is the dress blue or gold? The phenomenon originated in a photograph of a dress posted on Facebook in 2015. The dress was black and blue, but the conditions of the photograph ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive