Photo: Axelle/Bauer-Griffin/FilmMagic, Carrie Underwood/instagram
Carrie Underwoodcan’t believe how fast her youngest is growing up!
On Sunday, the country singer, 40, shared asweet tributein honor of son Jacob’s 4th birthday, featuring some photos from the little boy’s Spiderman-themed celebration.
Jacob’s birthday party featured a blue and red two-tiered cake decorated with Spiderman webbing and a night skyline as well as a Spiderman action figure sitting atop the dessert. The little boy’s name was also written at the base of the treat and the number 4 was iced on the cake in yellow.
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
Along with Jacob, Underwood and husbandMike Fisherare also parents to 7-year-old son Isaiah.
Earlier this month, the “Before He Cheats” artist shared an adorable video on Instagram of Jacob “starting the day off right” with an energetic workout.
“The boys found one of my old Tae Bo DVDs in a box of things and Jake thought he’d have himself a little morning workout! 😂,” the mom of two captioned the video. “I may soon have myself a gym buddy! 💪💪💪.”
The preschooler could be seen enthusiastically trying to keep up with theBilly Blanks-led workout videoin a white t-shirt and red sweatpants as his mom, recording from behind him, laughed at the sight.
Underwood and her family also recentlyenjoyed a fun-filled outingat the NASA Space Center in Houston, Texas.
“Had the best day @nasa talking to astronauts in space, driving moon rovers, checking out space station replicas and meeting some really cool people!” Underwood wrote on Instagram earlier this month.
“Thanks to @astro_kimbrough and everyone there for showing us around and being so sweet to my boys (who may just end up being future astronauts)!!! #Houston #Space #BeamMeUp,” she added.
source: people.com