By Jennifer Newman, Cristina Coppin of Town and Country | Two years ago, Lady Kitty Spencer-then best known as Princess Diana's niece-was asked to walk the runway in a Dolce & Gabbana show. Now, thanks to what Spencer told Town & Country was "a happy accident," she's an ambassador for Bulgari, and working her way up in the fashion world. Still, her style reveals that she hasn't totally left her royal ties behind.