African Mermaid Prom Dress Navy Blue Lace Floor Length Trumpet Evening Gown with Backless Zipper from Dhgate Prom Dresses price 113.73 Understanding the Black and Blue Dress Illusion Prom Dress Style #27028 La Femme I've been thinking about "the dress" for 10 years. Here's what I've learned. 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