Mazel Tov! Actress Natalie Portman gave birth to a baby boy, People magazine reported Tuesday. It’s the first child for the Oscar winner, 30, and her fiancé, choreographer Benjamin Millepied. Portman had kept the sex of the baby and the possible name under wraps before his birth, saying “I think it’s a Jewish thing to be kind of superstitious. You don’t do any of the baby stuff before the baby arrives.” Portman and Millepied met on the set of her Oscar-winning movie, Black Swan.