14. Charlotte Casiraghi, 2011
Charlotte Casiraghi looked simply stunning in a pale blue strapless sweetheart gown with a matching cape and gold belt detail. The Monegasque royal wore the Giambattista Valli Couture gown for the dinner reception following the wedding of Prince Albert of Monaco and Charlene Wittstock. Casiraghi, the granddaughter of the late actress Grace Kelly, is a staple at fashion fetes, and was ranked on Vanity Fair's International Best Dressed list in 2006. She has also been a Gucci muse since 2002, when she became the face of its campaign Forever Now, which celebrated the label's 90th birthday.