Kourtney Kardashian's Son Mason Disick, 14, Joins Instagram, Shares Rare Photos of Himself All Grown Up

Kim Kardashian and Khloé Kardashian shared their emotional reactions to their nephew being on Instagram in the comment section of his first post

<p>Frazer Harrison/Getty Images; Mason Disick/Instagram</p> (L) Kourtney Kardashian (R) Reign and Mason Disick.

Frazer Harrison/Getty Images; Mason Disick/Instagram

(L) Kourtney Kardashian (R) Reign and Mason Disick.

Kourtney Kardashian’s son Mason Disick has joined Instagram!

On Saturday, May 25, the 14-year-old — whom Kardashian shares with ex Scott Disick — launched his first official Instagram page as he shared rare photos of himself looking all grown up on the social media platform.

In his first post, Mason uploaded a photo of him posing outdoors on a balcony with his head dipped down while wearing a cap over his face, with a black T-shirt and khaki green baggy pants. In a second snap shared, he had his back turned to the camera as he showed off his outfit some more.

Mason received emotional reactions from his aunts Khloé Kardashian and Kim Kardashian in the comment section as they responded to the photos.

“I can’t believe this is happening,” Khloé, 39, wrote as Kim, 43, added, “You’re really on Instagram 🥹.”

<p>Mason Disick/Instagram</p> Mason Disick in a photo he shared on his new Instagram account.

Mason Disick/Instagram

Mason Disick in a photo he shared on his new Instagram account.

Related: Kris Jenner Reveals the One Rule Grandson Mason Must Follow to Get a Car at 16

For his next post, which was captioned “Fam,” Mason shared a photo of him with a group of his friends as they each held Jaded London shopping bags while standing beside a white wall.

In a second photo from that post, Mason walked the streets of Soho in New York City with his little sister Penelope Disick, 11, as they both wore furry coats with their backs turned to the camera. The siblings were also snapped in a third pic as they shared a sweet moment eating sweet treats together beside a brick wall.

Lastly, Mason posted a joint bathroom selfie with his brother Reign Disick, 9, followed by photos of him posing with a couple of friends.

<p>Mason Disick/Instagram</p> Mason Disick and his sister Penelope, 11, in a photo he posted on his new Instagram account.

Mason Disick/Instagram

Mason Disick and his sister Penelope, 11, in a photo he posted on his new Instagram account.

“🪞 pics is all we know,” the teenager wrote in the caption.

On her Instagram Stories, Mason's aunt Khloé again shared her reaction to the teen joining Instagram.

"I can't believe my @masondisick is on insta. The one who named us KiKi and KoKo is a legit teenager," she wrote over the first photo Mason had shared on the platform, adding several emotional emoji.

<p>Mason Disick/Instagram</p> Mason Disick and his brother Reign, 9, in a photo posted on Mason's new Instagram account.

Mason Disick/Instagram

Mason Disick and his brother Reign, 9, in a photo posted on Mason's new Instagram account.

Related: Mason Disick Makes Rare Appearance as He Shows Off Fit Check on Khloé Kardashian's Instagram

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Mason is Kourtney’s eldest child shared with her ex Scott, followed by daughter Penelope and son Reign. The siblings also have their six-month-old baby brother Rocky Thirteen, Kourtney’s first child with her husband Travis Barker.

Mason has followed in the footsteps of his social media savvy mom and aunts — who each have over 200 million followers and counting — in joining Instagram, along with the rest of his family in being on social media, and has already amassed 115k followers himself as of the morning of Sunday, May 26.

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