From Wikipedia, the free encyclopedia. Stephanie Vanessa Fantauzzi (born March 17, 1987) is an American television and film actress, model and singer of Brazilian and Italian descent. Fantauzzi is best known for her role of Estefania in Showtime's Shameless. Born in Sao Paulo, Brazil, but raised in Boca Raton, Florida, Fantauzzi is of Brazilian and Italian descent. She began her career as a model and singer, working in New York and Miami, and studied journalism and sociology while attending Fl ...