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 Blue V Neck Lace Long Prom Dress, A Line Spaghetti Formal Dress Eleven years ago, a single photo posted on Tumblr sparked one of the biggest internet debates of all time. The dress instantly divided the world, some swore it was white and gold, Blue and black or white and gold? Dress debate turns 10 years old