Mason Disick is shifting into high gear for his birthday.
Scott Disick and ex Kourtney Kardashian‘s eldest son turned 15 Dec. 14 and received a special luxury present from his dad—a mini version of the Mercedes-Benz G-Class Wagon.
“Happy birthday big boy!” Scott wrote on his Instagram Stories, alongside a photo of the smaller vehicle parked next to several other cars. “Felt like it was only fair 4 you 2 get your first g wagon even if it’s a mini g wagon it’s still a wagon! Love u son!!!!!! Let the good times roll.”
The 41-year-old added, “Gotta be the coolest little wagon I have ever seen! You deserve every inch of it! Love you more than anything in life.”
Mason, who will legally be able to obtain his California state provisional instruction permit at age 15 and 1/2, shares his birthday with his little brother, Reign Disick. Scott and Kourtney’s youngest child together turned 10.

To celebrate, Scott took him to a Los Angeles Rams game last week. “Had 2 much fun with you at your first game you asked me to take you to and I don’t even like sports,” he wrote to Reign on his Instagram Story. “That’s when you know you realy [sic] love your kid! Just kidding love u more then [sic] life young blood. Happy bday son.”

Kourtney—who also shares daughter Penelope Disick, 12, with Scott and son Rocky Thirteen Barker, 13 months, with husband Travis Barker—shared a joint tribute to Mason and Reign on her own social media.
“My birthday boys,” she wrote on Instagram, alongside throwback photos of the brothers. “So special to me it hurts my heart.”
Proud aunt Kim Kardashian commented, “I still can’t believe they are born on the same day. Happy Birthday Mason and Reign. I love youuuuuuu.”
Their grandmother Kris Jenner also posted a tribute to Mason—the eldest of her 14 grandchildren—and Reign.

“Our birthday twins! I still can’t believe the two of you share the exact same birthday,” she wrote on her Instagram, alongside more throwback pics of the siblings. “What a special blessing that connects you forever. You are both so deeply loved, and I am endlessly grateful to God for choosing me to be your grandma.”
She continued, “Mason, you are so kind, creative, smart, talented, and the best brother, son, grandson, cousin and friend. Watching you grow up and become such a caring and wonderful young man is pure magic—you make us all so proud.”

To Reign, Kris wrote, “You bring so much energy, laughter, and joy wherever you go. Your inquisitive mind and vibrant personality light up every room. You’re smart, funny, and full of so much love, and I feel blessed to witness the amazing little person you’re becoming.”
The Kardashian-Jenner momager added, “You fill my life with so much pride and happiness, and I love you both with every bit of my heart and soul. I’m so proud of the incredible boys you are and excited for the amazing futures you both have ahead of you!”
Look back at cutest family moments featuring Scott and Kourtney’s kids over the years..

Mason Officially Joins Instagram
Mason opened his first official Instagram account May 25, 2024.

Ice Cream Social
After joining Instagram, Mason shared three posts, including one containing pics of himself hanging out with his sister Penelope.

Brothers’ Selfie
Mason also shared this mirror selfie of himself with little bro Reign.

First Family Pic of 2024
Scott shares a pic of his and Kourtney’s three kids, Mason (left), Reign and Penelope on his Instagram Stories in January 2024.

Family Fun Time
Scott and his eldest kids Mason and Penelope appear with aunt Kim Kardashian and her kids North, Saint, Chicago and Psalm in December 2023.

What’s the point of being a parent if you can’t embarrass your kids? Reunited with his kids after Kourtney and Travis Barker’s May 22, 2022 Italian nuptials, Scott posted an adorable pic of a sleepy Reign on his Instagram Stories.

Scott, Mason and Penelope are joined by family friends for a night full of fun, as Scott captioned his Insta story pic, “Got my crew with me.”

At 9 years old, Penelope poses for a sweet selfie with Scott, which he captioned, “My little girl is getting so big I can’t take it!”

Scott shares another sweet photo with his daughter, this time giving her a loving kiss on the head.

Reign, Mason and Penelope are joined by cousin North at their bracelet-making and lemonade stand. Dad Scott even received a custom “Lord” bracelet from Penelope! “Thanks pooshalini,” he joked on Instagram Stories.

Reign, Penelope and Mason play tag on the beach in a sweet pic shared by Scott on July 18.

Scott shares a suntanning pic on his 39th birthday featuring kids Reign and Penelope in their backyard. “Happy bday,” Scott captions the Instagram Story in May 2021.

Scott wishes Kourt a happy 42nd b-day on Apr. 18, 2021. “Happy birthday to the best mom a child could ask for a some more,” he writes with a sweet family photo.

“Love and happiness,” Kourtney wrote during a weekend getaway to Santa Barbara with her kids in August 2020.

“Pool party,” Scott writes on this photo of Mason and Reign.

“Another day another poosh pose,” the father of three quips about his daughter.

“I got 10 on it,” Scott writes alongside this playful snap of Reign.

“My little precious,” the Flip It Like Disick star writes.

“My loves,” Scott declares.

The eldest Kardashian shares to Instagram this cute snap of son Reign.

Kourtney and Mason have a ton of fun goofing around on TikTok.

Reign is rockin’ around the Christmas tree(s) in this action shot shared to Instagram in December 2019.

“Not sure who has more fun @disneyland #disneyland #HolidaysBeginHere”

Throwback! “Just two cowgirls loving life! #kuwtk,” Khloe captions this selfie from the family’s Wyoming trip, which played out on The Kardashians.

“My silly baby is 5 years old today,” Kourtney shares on Saturday, Dec. 14, 2019. “Life has so much more meaning with this wild, sensitive boy who has shown me the world through such different eyes.”

Both of Kourtney and Scott’s boys were born on December 14, but it was their eldest who celebrated double digits in 2019. “Happiest tenth birthday to the boy who changed my heart forever. No one is cooler or sweeter than you,” his mom writes on Instagram.

Reign rests on Kourtney after a busy day planting trees.

Penelope and Reign have a sweet sibling moment while at TreePeople in Los Angeles.

“We spent our morning planting trees with @treepeople_org,” Kourtney shares on Instagram. “Thank you @futureearth for including us in such a beautiful morning taking care of our Earth.”

Scott couldn’t love his daughter and his dog more. “My little ones,” he writes.