“The most perfect Mother’s day… I wish all you Mama’s the happiest of days today!” she captioned her post.
Morgane did not reveal the name or sex of the baby but did share a sweet photo of the newborn’s arm in a mustard-and-white striped outfit.
The couple, who wed in 2007, are also parents to three sons (including twin boys they welcomed in April 2018) and one daughter, but have chosen not to publicly reveal their names.
Their latest arrival was welcomed with well wishes from several famous pals, including actor Josh Brolin, who wrote, “❤️Happy Mama’s Day!!!!🙏.”