BY LAURA SCHREFFLER HEIRESS AND ENTREPRENEUR NICKY HILTON — HERE WEARING THE NEW CLASH DE CARTIER COLLECTION — ON HER ADMIRABLE WORK ETHIC, SOPHISTICATED STYLE AND HOW TO HAVE IT ALL. Many wanderers traveling through Rome make it their mission to visit the Trevi Fountain. After all, legend says that those who toss in one coin with their right hand,…
