EXCLUSIVE: Lady Antebellum's Charles Kelley Gushes Over His 'Hot' Wife and Their Newborn Son at the Academy of

Charles Kelley is clearly head over heels in love with his little family of three.

ET caught up with the Lady Antebellum singer on the red carpet at the Academy of Country Music Awards in Las Vegas on Sunday, where he opened up about life at home with his wife, Cassie McConnell, and their 2-month-old son, Ward.

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"It has been [fun] -- she's so amazing with our little boy, Ward, and just to watch him grow up so fast," the 34-year-old dished when asked about what it's like to see his wife as a mother. "I'll go out for a few shows and come back and see him and he just looks different every time."

Growing up fast, indeed! Kelley also told ET that their newborn is already sneaking in sweet smiles -- and taking after mom!

"He's finally smiling and it's not gas, it's real smiles," Kelley said. "So far, he's really chill, so maybe [he's] more [like] mom than me."

The "Bartender" singer hasn't written any songs about Ward just yet, but teased that a song inspired by his baby boy isn't totally out of the question.

"I think that, even going into the next Lady Antebellum record, all three of us have kids and we're going to start working on [the next album] throughout the summer and the fall," he explained. "And [we'll] just write from a different perspective."

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And even though he loves spending time with their little bundle of joy, he still enjoys the occasional date night with his wife, away from Ward.

"We brought a nanny so [my wife] could get all dolled up and have a night out and feel like a woman again [tonight]," he explained. "She's been just killing it as a mom for the past two months and so it's nice to be able to celebrate tonight together. It's been an amazing year."

Ahead of the show, Kelley took to Instagram to share a snap of the adorable duo en route to the venue.

"Red carpet ready with my hot @womanista wife," he captioned it.

Meanwhile, his wife shared a pic of herself getting the "finishing touches" on her glamorous blonde tresses.

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2016 Academy of Country Music Awards Red Carpet Arrivals