Sex and The City star Cynthia Nixon has a new bundle of joy. Her fiancée Christine Marinoni gave birth to a baby boy named Max Ellington Nixon-Marinoni on Monday. Though he is their first child together, the 44-year-old actress has a 14-year-old daughter and an 8-year-old son from a previous relationship. Nixon and Marinoni, 43, became engaged in 2009, five years after they began dating.