During a Tuesday appearance on The Ellen DeGeneres Show, the handsome The Voice coach revealed that Behati is pregnant with their second daughter.
"It is a girl. We are having another girl," Adam said on the show. "We're already working on [the name]. This is going; this is happening."
The conversation began when Ellen DeGeneres congratulated the 38-year-old Maroon 5 frontman on having another child.
"I am having another baby," Adam noted matter-of-factly.
When asked how his wife has been feeling during her second pregnancy, Adam replied, "She's awesome. She's just like a champion of the world. She's killing it. You would never know she's almost seven months pregnant. God bless her."
Adam and the Victoria's Secret model are already parents to daughter Dusty Rose, who was born September 21, 2016.
Adam revealed that Dusty is very quiet and sweet, "which is so funny," he said, "because we're, like, maniacs!"
"She just kind of calms us down," Adam noted with a smile. "She looks at you and she's like, 'Okay, relax.' It's good. She really is [chill]."
Ellen insisted she had named Adam's first baby because she combined the beautiful color of a rose with the name Dusty and sent it to him as a suggestion. Adam, in turn, loved the idea and said, "That's it!"
Adam therefore joked about how Ellen should probably be involved with naming Baby No. 2 as well.
When asked whether they'd like to have even more children in the future, Adam replied, "Probably. I want a lot. I thrive in chaos. I really, genuinely enjoy and love it."
He added, "And [my wife] is an only child too, so look out! She wants like 100 babies. But I don't know if I could do that. To have 100 actual babies, that's a lot of babies."
Adam and Behati got married in 2014. The model announced she has another baby on the way in a September 2017 Instagram post.
"Round 2," she teased at the time while showing off her tiny baby bump.