Carrie Underwood and her family celebrated her son Jacob's third birthday on Friday (Jan. 21), and the country superstar turned to social media to share pictures of the incredible Paw Patrol-themed cake she had made for the occasion.

Underwood took Jacob and his friends to DEFY Nashville, an air sports complex that offers a range of trampolines ranging from relatively normal to extreme wall trampolines, as well as an air track for gymnastics, extreme dodgeball, stunt falling, a Ninja course, trapeze and aerial courses and more.

One of the highlights of the deluxe birthday celebration was the custom three-tiered cake, which features characters from the popular children's show along with a dog bone with "Jacob" written on it.

"My sweet baby is 3. Where do the years go???" Underwood writes alongside a picture of the special-made cake.

"He and his buddies had fun @defynashville and got all sugared up on the deliciousness that was almost too cute to eat from @iveycakestore !" she adds. "Our hearts are even more full than our bellies celebrating our precious miracle, Jake!!! God is good!!!"

Underwood and her husband, former NHL hockey player Mike Fisher, welcomed Jacob Bryan Fisher on Jan. 21, 2019. He joined his older brother, Isaiah, who was born in February of 2015.

One of Underwood's closest friends, Ivey Childers, owns and operates Ivey Cake, and she has created a series of one-of-a-kind confections for various special moments in Underwood's life for years, including a string of special cakes for her kids' birthdays each year. Underwood posting pictures of those cakes online has become an annual tradition that she shares with fans.

PICTURES: See Inside Carrie Underwood's Breathtaking Nashville Mansion

Carrie Underwood and her husband, Mike Fisher, owned a 4-bedroom, 4-bathroom, 2-half-bathroom home in an affluent Nashville suburb called Brentwood. The 7,000-square-foot mansion features a wet bar, fitness center and tennis court, as well as a four-car garage, walk-out basement with heated marble floors and extra appliances, including a sub-zero fridge and wine fridge. That house is where Underwood suffered a devastating fall in 2017.

The couple sold the luxurious home for $1,410,000 in March of 2019, after they moved into the massive dream home that they had spent several years building from scratch.

PICTURES: See Inside Carrie Underwood's Beautiful Post-'American Idol' Home

Carrie Underwood invested her money wisely after winning American Idol in 2005. One of her first big purchases was a 3,099-square-foot home in the well-to-do Nashville suburb of Franklin, Tenn. Underwood paid $384,000 for a luxurious 3-bedroom, 3.5-bathroom stone and stucco home in a private gated community.

The house features a library, a vaulted ceiling and lovely amenities throughout, but while it's very nice, it's certainly not the kind of home you'd picture for a budding country superstar. Underwood wound up being a huge success right out of the gate with her debut album, Some Hearts, and she sold the home in Franklin for $372,500 in 2007, when she purchased the Brentwood mansion that she would later share with her husband, Mike Fisher.

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