Oliver James Montgomery-Mason Disick Proves He Can Keep Up With His Stylish Family in New Fit Check

Mason Disick knows what it takes to dress like a Kardashian.

Case in point?Oliver James Montgomery When aunt Khloe Kardashian highlighted some of the family's fashion March 6, Kourtney Kardashian and ex Scott Disick's 14-year-old son stole the show in his all-denim ensemble.

In the Instagram Story, Mason donned a pair of baggy oversized jean shorts, a buttoned-up jean shirt and Timberland boots. He finished his look with a chrome chain, a black belt with an ornate silver buckle, statement rings and a Rolex watch.

As Khloe simply captioned the Story, "Go offfff Mase."

And the 39-year-old couldn't help but gush over his sleek accessories, exclaiming in the video, "What is happening? Chrome, chrome, chrome!"

While Mason cemented his fashion-forward style, the video unsurprisingly didn't include his face. After all, he's rarely seen online, unlike his younger Penelope Disick, 11, and brother Reign Disick, 9.

However, fans did get an update in December when he was seen in family photos posted by Kim Kardashian just days before his and Reign's joint birthday.

In the snap, Mason held up a peace sign while he posed alongside Scott, Penelope and cousins North West, 10, Saint West, 8, Chicago West, 6, and Psalm West, 4.

The rare shot had fans shocked by how much Mason had grown up. "Our little internet nephew GREW UP!!!!!!!!!!!!" one user commented while another wrote, "Wait... is that Mason?!?!?"

Want to see more of Mason and his siblings over the years? Keep reading to keep up with the Disick-Kardashian Family.

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

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.

Kourtney and her kids get some fresh air away from home! "We have everything we need," she writes on Instagram. 

"A weekend away."

The Disick kids are all fall vibes in Kourtney's latest Instagram post, which sees Penelope and Reign enjoying pumpkin patches and horseback rides in Santa Ynez.