Optical illusion renews blue and black dress debate nine years on Express.co.uk The Science of Why No One Agrees on the Color of This Dress WIRED Gold and white or blue and black?' optical illusion dress from 2015 found at yard sale 9Honey Jenna Bush Hager wears viral 'The Dress' 10 years after debate 10 years ago today, this dress was posted online, turning into a viral phenomenon. Viewers couldn't decide if the dress was blue and black, or white and gold. It was later confirmed The Dress is now a Halloween costume