Mason, 14, was spotted wearing a black Supreme x Fox Racing hoodie with black jeans and matching shoes on a trip to a Trader Joe’s grocery store in Los Angeles on Monday, November 18, as seen in photos published by Daily Mail on Tuesday, November 19. He stood tall over Kourtney, 45, who is the shortest Kardashian-Jenner sister at a height of 5 feet.

The Poosh founder coordinated with her oldest son, whom she shares with ex Scott Disick, on the outing, wearing a dark gray zip-up hoodie with black pants, black sunglasses and a Hermes Birkin bag. Kourtney styled her hair in a messy bun and skipped makeup for the trip. Her and Scott’s daughter, Penelope Disick, was also present, wearing a blue polo shirt and blue plaid skirt.

The former couple’s youngest son, Reign Disick, did not appear to be with them. Rocky Thirteen Barker, Kourtney’s son with husband Travis Barker, was also seemingly absent.

Mason’s outing with his mom and sister comes after the teen reached a milestone with the debut of his Instagram account back in May after previously staying out of the spotlight. He joined the platform with photos of himself posing in green cargo pants, a black T-shirt and a baseball cap.

“My first 𝑏𝑎𝑏𝑦,” Kourtney commented on the post.

“I can’t believe this is happening,” aunt Khloé Kardashian wrote, while aunt Kim Kardashian added, “You’re really on Instagram.”

Kourtney reiterated her comment in a post on her Instagram Stories, writing, “My first 𝑏𝑎𝑏𝑦 is on Insta and I’m not OK.” She concluded with a series of emotional emojis and a red heart.

Mason’s account, which he last updated in June, now includes photos of his friends, as well as Penelope, 11, and Reign, 9.

The famous 𝘤𝘩𝘪𝘭𝘥’s mom previously shared that he preferred to have his privacy over appearing on the family’s TV show or their social media pages.

“He doesn’t want any part of it,” Kourtney said on the “Not Skinny But Not Fat” podcast in October 2022. “He’s not on social media. He doesn’t love it, and I want my kids to be kids. I crave normalcy as much as we can have it.”

Mason once had another Instagram account that he made with Kourtney and Scott’s permission in 2020, but he later deleted it. A text exchange with Kim, 44, about her daughter North West revealed that he had learned a lesson about social media.

“Hi I don’t wanna disrespect North but I don’t think she should do the lives [on TikTok] unless someone is with her,” Mason wrote in a text to his aunt, which Kim shared on her Instagram Stories in 2021. “Because people are always screen recording and she might tell information that isn’t correct and stuff like that, that she will regret. I did the same exact thing as she did I would do the lives and now I regret saying one of the things that I said.”