How "The Dress" Became an Illusion Unlike Any Other Scientific American A Line Sweetheart Neck Tulle Lace Gray Blue Long Prom Dress, Lace Formal Dresses Gray Blue Tulle Lace Long Prom Dress, Gray Tulle Lace Evening Dress US 8 Gray The Lucetta Dress in Icelandic Blue Baroque Floral 18 Icelandic Blue Baroque Light Blue Bridesmaid Dress Size Large Birdy Grey Botanical I've been thinking about "the dress" for 10 years. Here's what I've learned.