Moore told Access Hollywood while she was promoting her new film Mr. Brooks that she would love to have a son to help balance the female hormones in her home.
The 44 year-old star is the mother or Rumer, 18, Scout, 15, and Tallulah, 13. Actor Bruce Willis is the father of her children.
Moore shared her feelings with Access Hollywood hostess Nancy O’Dell, who is expecting her first child this summer. Moore did not confirm or deny rumours that she is already pregnant. She did, however, tell Vanity Fair magazine last January that she would love to have children with her husband, 28 year-old Ashton Kutcher.