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Camden Lachey is only a month old, but Nick Lachey and Vanessa Minnillo's son is already a football fanatic!

The 98 Degrees singer shared a new photo of him and his newborn son on Tide's Facebook page as part of a new promotional campaign ... showing the proud papa kissing the cute kid on his head while wearing matching Cincinnati Bengals jerseys.

"As a diehard NFL fan, I am thrilled to be a part of Tide's 'Show Us Your Colors' campaign and show how I'm passing along the love of my team to my son," said Nick of his partnership with Tide. "Football is more than just a game -- it's a lifestyle and a game where your team's colors mean everything. I can't wait to work with Tide, the brand that keeps these colors true."

Lachey also opened up about his son's name, Camden.

Nick had originally liked the name "Colin," but when Vanessa nixed they started looking for another "C" name.

He tells PEOPLE they came up with the name after visiting Minnillo's obstetrician's office on Camden Dr.

“We didn’t really know anyone else named Camden. It was such a neat name," he says. "We fell in love with it and decided on it five or six months ago.”

Fun Fact: Nick's former flame Kristin Cavallari also named her kid Camden.

Check out more stars and their cute kids in the gallery above!

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