Fox told Cosmopolitan in April that she's "always been maternal" and that she wants "at least two, probably three kids."
The Friends With Kids actress and her 90210 beau tied the knot in June 2010. Green also has a 10-year-old son, Kassius, from a previous relationship.
The baby's name is Noah Shannon. For more on the meaning of the name, visit Parents.com's In Name Only blog.