Jessie James Decker Welcomes Baby No. 4, a Boy, with Husband Eric Decker

"Our beautiful boy is here," Jessie wrote on Instagram on Sunday as she shared photos of the couple's newest child, who made his arrival on Feb. 9

Jessie James Decker is a mom again!

The country singer, 35, welcomed her fourth baby with husband Eric Decker on Feb. 9.

She announced the happy news on Instagram on Sunday, declaring, "Our beautiful boy is here 💙," before sharing the newborn's name and birth stats: "Denver Calloway Decker 8.7 2/9/24 💙."

Jessie's post featured a photo of herself in her hospital bed, with Denver nestled against her chest as Eric, 36, gazed down at his newest child. A second photo showed the baby snoozing on a blanket while dressed in a zip-up romper decorated with a car and airplane print.

Related: Pregnant Jessie James Decker Shares a Glimpse Inside Her Colorado-Themed Nursery — See the Photos! (Exclusive)

Jessie and Eric are already parents to sons Forrest and Eric, as well as daughter Vivianne.

Chatting with PEOPLE about her nursery in January, the musician shared that her three kids were excited to help lend a hand in preparing the space.

"They've been such a big help," Jessie said. "What I love about this is they're really aware of what's going on. Before, whenever Forrest was born, they were still babies themselves and so they knew what was going on, but not to this level."

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"I mean, Vivi will be 10 years old when this baby's here and if we all remember being 10, you know what's going on. And she is completely aware and so excited, and they've all been helping me in the nursery finalize things."

The proud mom said last month that her younger son Forrest had been writing love letters to the baby as he got ready to step into his new role as a big brother. Meanwhile, her older son Eric has become her "protector."

"He tries to hold my hand when we're going up and down stairs or puts his hand on my back and gets worried, or he will not let me carry anything heavy because he's just paranoid," Jessie remembered. "He's like, 'I got it, Mom. I'll carry this.' "

Appearing on Today in November, the country-pop singer confirmed that baby No. 4 was a boy when host Jenna Bush Hager asked about a recent Instagram post that many fans thought was a hint.

"Does that mean you're having a boy?" Bush Hager, 41, asked.

"I’m having a boy. Yup, we’re having another boy," the expectant mom shared.

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