The 26-year-old took to her Facebook to announce the news of the birth of her son, reported Daily Mail online.
"We have been very lucky to have had a peaceful few weeks at home. He is healthy, happy and perfect. We are humbled to have the opportunity to call ourselves the parents of this beautiful soul and I am forever grateful to God for allowing me to know this kind of boundless, immaculate love," Fox wrote.
"Thanks to those of you who wish to send your positive energy and well wishes. May God bless you and your families abundantly," she added.
Fox never commented on her pregnancy, but only confirmed the baby news by posing for a picture back in June.
The actress was first rumoured to be pregnant back in March. The celebrity couple have been married for almost two years, with Fox being a step mom to Green's nine-year-old son Kassius.
