Pregnant Jessie James Decker Goes All Out on Halloween as She Celebrates 'Last One as Family of Five'

The country singer and her husband, Eric Decker, are already parents to three kids

Jessie James Decker is celebrating Halloween with her family of five!

The pregnant country singer, 35, shared her family's Halloween celebration on her Instagram on Tuesday. Jessie, who went as a cow, posed next to her husband Eric Decker, who dressed as a farmer.

Standing in front of the couple, daughter Vivianne Rose, 9, went as Workout Barbie, while sons Forrest Bradley, 5, and Eric "Bubby" Jr., 8, both opted for football player costumes.

"Happy Halloween 🎃 last one as a family of 5 before we become a Decker Wolfpack of 6🥰," the expectant mom wrote in her caption.

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Related: Jessie James Decker Knows the Sex and Name of Baby No. 4 as She Enjoys 'Easiest' Pregnancy So Far (Exclusive)

While speaking to PEOPLE in October, the musician opened up about welcoming her fourth baby with husband Eric. "Pregnancy, for me, is easy, but I would say this has been the easiest of all of them," she revealed. "I can't complain."

"I always laugh and say like Vivi tried to kill me in the beginning. It was the roughest pregnancy I've ever experienced in my life. My middle child [Eric] was fairly easy. Forrest was also pretty rough on me, which is really funny because I would say Vivianne and Forrest are probably the most alike. But this one's been fairly easy."

She also said the news of baby No. 4 "shocked" and surprised both the family and their loved ones.

"Eric didn't believe me at first. He thought that I was playing a joke on him," she laughed. "He thought that I had my sister, who was pregnant at the time, pee on a stick. It was hilarious. Once everyone realized, 'This is not a joke,' everyone was super excited. And we still are."

"Every single day feels like Christmas. We just can't believe this is happening," the expectant mom raved. "We're such a tight little wolf pack. It's so exciting to bring another baby into our family."

At the end of August, Jessie announced that she was expecting her fourth baby on Instagram.

"Good morning ☀️," she captioned a video where she stepped onto a balcony overlooking palm trees dressed in a cropped tank and underwear and turned to reveal a bump. In helping to announce the news, the singer set the video to Mariah Carey's "Always Be My Baby."

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