At the "Nocturnal Animals" premiere here, the 30-year-old actor proudly hit up the red carpet with Chambers in grey suit, reported Entertainment Tonight.
"How could you not look at her? She looks gorgeous," he said.
The "Birth of a Nation" star added that any nerves about their expanding family are quickly subside.
"I'm a little less nervous. You have a little more faith in the human mechanism. The only reason you're here and I'm here is because it works. We got through with one good baby, I think we can do it again," he said.
"It's one of those things where if I am dreaming, I don't want anyone to pinch me.