Princess Diana's Fairytale Wedding Dress 44 years ago today, on July 29, 1981, Princess Diana captivated 750 million viewers worldwide, as she married Prince Charles at St. Paul's Cathedral. She Guess who wore the most expensive royal wedding gown? Princess Diana vs Kate Middleton vs Queen Elizabeth II The Economic Times Amazon.com: Girls Sequin Tulle Puffed Sleeve Floral Embroidery Lace Evening Dresses Maxi Pink Princess Dress for (Pink, 3 4 Years): Clothing, Shoes & Jewelry Many of Princess Diana's dresses have been auctioned off for between $500,000 and $1 million. The most expensive dress worn by the late royal to be sold at auction is a 1985 Elegant Black Princess Long Black Ball Gown for Girls Aged 5 14 Perfect for Pageants and Special Occasions Girls 14 16 Princess Dress Etsy