‘I can’t believe this is happening,’ wrote Khloe, 39.  ‘I am sort of not ok,’ she added with crying emojis. ‘He’s a real teenager. The one who names us KiKi and KoKo.’

The proud aunt also shared the post on her Instagram Story, a photo of Mason showing off his look on the porch of a scenic country house.

After 14-year-old Mason Disick officially joined the social media platform on Saturday, his aunts Kim and Khloé Kardashian had an appropriate response

‘You’re really on Instagram,’ Kim, 43, commented on Mason’s first post. ‘I can’t believe this is happening,’ added Khloe, 39

With only three posts, the oldest son of Kourtney Kardashian and Scott Disick already boasts more than 30,000 followers, as of Saturday.

Mason shared several photos of himself with friends, as well as his siblings Penelope, 11, and 9-year-old Reign.

This isn’t the teenager’s first Instagram profile after Kourtney, 45, and Scott, 40, made him delete his account in 2020 when he joined without their permission.

His TikTok account was previously disabled for violating their terms of service as users are required to be 13 or older, and Mason was 10 at the time.

Kourtney opened up about the decision as she discussed parenting and social media with Miranda Kerr for Vogue Paris in May 2021.

‘Mason started some secret accounts during quarantine,’ she said. ‘Those were quickly shut down.’

The POOSH mogul explained that ‘what kids share today, it’s there forever,’ adding: ‘I felt like quarantine was a big lesson, too, because I felt like it was hard for kids.’

‘I loved it because I loved being home and being with them and not feeling guilty or feel like I was missing out,’ Kourtney explained. ‘It was a good time for bonding, but then I felt like for their social interaction, it was really hard for them.’

The proud aunt also shared the post on her Instagram Story, a photo of Mason showing off his look on the porch of a scenic country house

Mason shared several photos of himself with friends, as well as his siblings Penelope, 11, and 9-year-old Reign

This isn’t the teenager’s first Instagram profile after Kourtney, 45, and Scott, 40, made him delete his account in 2020 when he joined without their permission

With only three posts, the oldest son of Kourtney Kardashian and Scott Disick already boasts more than 30,000 followers, as of Saturday

Mason’s Instagram debut came as dad Scott shared a selfie with daughter Penelope and a sweet message

Kourtney previously opened up about the decision to shut down Mason’s first account in 2021. ‘Mason started some secret accounts during quarantine. Those were quickly shut down,’ she shaed

When his cousin North West, 10, got in trouble for going on TikTok Live without permission in December 2021, Kim shared the ‘mature’ advice Mason texted her ‘just in case for safety.’

‘Hi I don’t wanna disrespect North but I don’t think she should do the Lives unless someone is with her because people are always screen recording and she might tell information that isn’t correct and stuff like that,’ he wrote.

Mason said North might ‘regret’ sharing their family’s personal information after he ‘did the exact same thing’ and now regretted ‘saying one of the things’ he mentioned on Live.

Kourtney welcomed Mason, Kris Jenner‘s first grandchild, in 2009 on the season four finale of Keeping Up with the Kardashians.

After Kim posted a photo of Mason and his cousins in December, followers remarked at how much he’s grown, comparing him to uncle Rob Kardashian.