The Hollywood pair are already delighted parents to a 20-month-old daughter named Wyatt Isabelle.
While the announcement may come as a surprise to fans, the couple are overjoyed with this news.
Parenthood for the couple has been filled with nothing but joy.
Ashton said: “You think you know how much you can love another person, and then you have a child and you realize you didn’t know. It’s infinitely rewarding. I think I really look at this as the greatest opportunity of my life.”
He continued, “But the most amazing thing about having a baby is my partner, Mila. She’s the greatest mom—I can’t even! Like, I go to work every day and I come home and she’s perfect.”