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 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 Classy Long Mermaid One Shoulder Royal Blue Prom Dress with Side Train Women's Watercolor Maxi Dress 12th Tribe Gold Lace Appliqued Royal Blue Trumpet Prom Dress Promfy Women's German Dirndl Dress Blue Gold XXL