Parietti was born on 2 July 1961 in Turin, Piedmont, Italy, daughter of Francesco, a Piedmontese partisan originally from the Langhe then a chemist, whose nom de guerre was Naviga, and Grazia Dipietromaria, painter and writer.
Parietti was born on 2 July 1961 in Turin, Piedmont, Italy. She is the daughter of Francesco, a partisan from the Langhe region who later became a chemist, known by his alias Naviga, and Grazia Dipietromaria, an artist and writer.