Mila has given birth to a boy, E! News is reporting.
The baby was born on Nov. 30, the outlet said. The name of the couple's child isn't known.
It's the second child for the couple, as they already share 2-year-old daughter Wyatt.
He later told Seth Meyers, "I was actually hoping for a girl because, first of all, our first girl is unbelievable, but also, I figured if we had a girl second [Mila] might give me one more shot to have a boy, and now I don't know."
"She might cut me off," he continued. "I want like 12 of them."
The duo got prepared for a second child by adding an Amazon Alexa system to their home so that they could control it by voice command.
"They wanted to do this before the baby came, and they love it," a source told Us Weekly. "Their entire house is now voice-activated. Every part of it works by command of their voice. It took weeks to do it, but it's amazing now and they love it."
Now the only question that remains is whether or not they'll continue to expand their family.
"I've always said this, 'I think you know when your family is complete.' After we had Wyatt, the second that I gave birth, I was like, 'I know that we need to have another baby.' We both knew it, we just felt it," Mila told Ryan Seacrest in July. "And so I always say after the second one, we'll know if we need to have another one. I really do believe you know when your family is complete."