Something more than just an over-the-shoulder smile made us take a second look at Renee Zellweger's dress from 2004. "At night pure white is intensely glamorous for special occasions," says Carolina Herrera. "Renee doesn't use a stylist, so our discussions were as much a part of the design process as the sketches. She had just finished the second Bridget Jones movie, so I took advantage of her being a little curvier than usual. Thankfully Renee loves fittings, because nothing matters more than a perfect fit, especially with a strapless. The bow in the back—eight yards of silk faille—was the perfect surprise. I copied the bow in my bridal line and it was one of the best-selling wedding gowns I've ever done."