Simonetta Fabiani was born Duchess Simonetta Colonna di Cesaró in Rome in 1922. She was the daughter of Don Giovanni Colonna Romano Duke of Cesarò of the aristocratic family of the Colonna. Simonetta presented her first fashion collection in Rome in 1946, two years after her marriage to Count Galaezzo Visconti. The couple divorced in 1959. Simonetta was a leading designer of post-World War II Italian high fashion (“alta moda”); her contemporaries included Alberto Fabiani (later her second husband), Roberto Capucci, Marquis Emilio Pucci, and Princess Marcella Borghese. In comparison to their French counterparts, the Italian designers offered elegant yet comfortable ensembles, made from innovative textiles in striking color combinations. She married Alberto Fabiani in 1952. From 1962 until 1965, she and Fabiani worked as partners and designers of Simonetta et Fabiani in Paris. The partnership ended in 1965. Simonetta traveled in India during the 1960s and 1970s, where she established a colony for the care of lepers as well as a craft training program. She returned to Rome in the 1990s, and lived in Rome and Paris until her death in 2011.