Don't blink—because Kourtney Kardashian and Travis Barker's baby boy is growing up fast.
In fact, their son Rocky Barker already has a full head of brown hair in family photos shared by Kourtney Sept. 13.
One image posted on the Keeping Up With the Kardashians alum's Instagram showed the 10-month-old sitting up on his own at a window ledge overlooking a city skyline. Meanwhile, he was pictured being held up by his rocker dad in another snapshot.
In a separate mirror selfie, taken amid Travis' ongoing tour with Blink-182, Kourtney breastfed Rocky as they snuggled under the blankets on a hotel bed.
She captioned the snapshots, "summmma adventures : part 2."
The cute update came a week after Kourtney shared a behind-the-scenes look at life on the road with Travis and his band. In a Sept. 5 Instagram post, the 45-year-old—who is also mom to kids Mason 14, Penelope, 12, and Reign, 9, with ex Scott Disick—can be seen packing PDA with her husband backstage during his New York show.
Other photos taken on the same night showed Kourtney holding Rocky on her lap as she played chess with Reign.
And Travis loves having Kourtney and the kids on tour. On a July episode of The Kardashians, he had a blast taking the family out to Sydney's Luna Park before his concert in the Australian city.
While playing carnival games with Kourtney's kids, the musician won a Squishmallow plushie for Penelope, before Reign surprised him with a prize of his own.
"Aw," Travis—who shares kids Alabama Barker, 18, and Landon Barker, 20, as well as stepdaughter Atiana De La Hoya, 25, with ex Shanna Moakler—said after the young boy handed him a stuffed toy. "Thanks, Reigny."
And what does Kourtney think of her blended family?
"The more kids, the merrier," she shared in a 2022 Kardashians episode. "It's more people to love. I am really close with Travis' kids and I love them, and it's a beautiful thing."
The Poosh founder, who had been friends with Travis for years before going public with their romance in 2021, added at the time, "I think because we've all known each other, it does make it easier to blend our families. It's all I could ever want."
To see more of Rocky—as well as Kourtney and Travis' blended family moments—keep reading.
Live Like Jack and Sally
For Halloween 2025, Kourtney Kardashian and Travis Barker dressed up as Sally and Jack from The Nightmare Before Christmas, while their son Rocky Thirteen Barker served as Zero.
What's This?
All hail the Pumpkin King's baby boy!
Little Pumpkin
Kourtney posted this adorable photo of Rocky behind the wheel in October 2025.
Look Both Ways
Travis showed his son how to safely cross the street while traveling for his and Blink-182's Missionary Impossible Tour in August 2025.
Big Foot Forward
The tiny tot took a giant step toward a menacing cutout of Sasquatch, proving he's not afraid of the fictional figure.
Rocker in the Making
Rocky made it clear he's taking after dad Travis by playing drums in July 2025.
That's Amore
Rocky even brought along a ukulele while on vacation in Portofino, Italy, in July 2025, with Kourtney captioning the moment, "When the moon hits your eye like a big pizza pie."
Playtime With Mom
Rocky sported some leopard print while playing with his mother, as seen in this pic the drummer shared on Instagram in honor of his wife's 46th birthday in April 2025.
Beach Vacay
Kourtney and her baby boy enjoyed a quiet moment in the shallow ocean.
Celebrating Mom's Birthday
During her 46th birthday trip in 2025, Kourtney took a break from reviewing some home renovation plans to enjoy the view from their private jet with her baby boy.
Beach Stroller
Kourtey and Travis walked hand-in-hand with their son while on the beach in a February 2024 Instagram post.
Little Drummer Boy
In January 2025, Travis showed that his son was following in his footsteps when he posted this pic of Rocky behind a mini drum set.
Tiny Learner
Rocky was deep in a book, reading all about the Pixar movie Inside Out 2 in November 2024.
Catching Some Rays
The Kardashians star took her son for a beach walk, as seen in an Instagram photo she shared in November 2024.
Disney Dad
On Rocky's first birthday, Travis took his son to meet Mickey Mouse at Disneyland.
House of Mouse
The baby boy got to take home his very own Mickey Mouse balloon during his visit to the Happiest Place on Earth.
Around the World
Rocky played with some unique toys, embracing a globe bouncy ball and a skeleton prop ahead of Halloween.
Bat Baby
For Rocky's first Halloween, Kourtney and Travis dressed him in a sweet bat onesie.
Spook-tacular
At 11 months, Rocky also sported a skeleton outfit for Halloween 2024.
By the Shore
The couple took Rocky to the ocean in an October 2024 snap.
Growing Up Fast
He took in the views in September 2024.
Spot the Tot
The reality star bundled up in a cheetah print coat as she carried Rocky in this snapshot shared by Travis in September 2024.
Miss You
The Blink-182 drummer kissed his baby boy on the cheek in this September 2024 picture.
Mother-Son Selfie
Say cheese! Kourtney snapped a breastfeeding selfie with Rocky in September 2024.
Tour Life
In August 2024, Kourtney shared photos from the road as the family joined Travis on Blink-182's summer tour, including this snapshot of herself nursing Rocky backstage.
Aliens Exist
Rocky had a blast riding on an UFO buggy backstage at a Blink-182 show.
Father's Day Tribute
"Happy Father’s Day @travisbarker !!" Kourtney wrote to Travis on Instagram on Father's Day 2024, sharing never-before-seen pics of her husband with their son. "Beyond grateful for the Dad that you are to our baby boy, and all of our kids."
Kisses for Baby
The reality star continued, " You keep us safe and protected and take care of us. Having a family with you is heaven. Happy to celebrate you!"
Sun Day, Fun Day
Kourtney also included this pic of Travis and Rocky in her Father's Day tribute.
The Parenting Show
Travis' daughter Alabama shared this photo of the couple with baby Rocky in June 2024.