Natalie Portman is a mom! The Academy Award-winning actress and her fiancé, Benjamin Millepied, welcomed a son, PEOPLE reports exclusively.

The pair met on the set of 'Swan' where Millepied -- a principal dancer in the New York City Ballet -- choreographed the dances and played her partner on screen. Portman won the Best Actress Oscar for her role in the film.

"We got along right away; she's very, very professional, not difficult - there's no attitude there," Millepied told Vulture of first working with his now fiancee.

Portman recently revealed her post-delivery plans. "I'll be out of the public eye after [the baby's born]," Portman told PEOPLE, also adding that she would think about her Hollywood future "as it comes."