Kourtney Kardashian’s son Reign addressed the longstanding conspiracy theory that his real father is Justin Bieber, not Scott Disick.

Following years of speculation over the true paternity of the reality star’s youngest child, Reign, 10, shut down the claims while appearing on his stepsister Alabama Barker’s boyfriend Scooter Jackson’s Instagram Live.

After a viewer asked if Bieber, 31, was his dad, the preteen quickly shut down the rumors.

‘No, he’s not. Bro, I swear, Justin Bieber is not my dad. Scotty…Scotty…Scotty is my dad,’ he declared. ‘I don’t know how old my mom was, but I think Justin Bieber was 16 when I got born. I don’t think my mom would do that.’

The Baby hitmaker, 31, and Kardashian, 45, were romantically linked following her split from Disick, when Bieber was 22 and she was 26. 

A year after Reign was born in December 14, 2014, multiple sources claimed that the Poosh founder and Grammy winner were ‘hooking up.’

‘Justin started hanging out with Kourtney alone because she started going out more,’ the insider told Us Weekly, at the time. ‘He’s been showing her a good time.’ 

The source noted that sparks first started to fly between them in ‘late August, early September’ and progressed into nights out and a trip to Universal Studios’ Halloween Horror Nights. 

Bieber has been friendly with the Kardashian family for years since posing for a Mrs. Robinson–inspired Elle shoot with Kim Kardashian in 2010. 

During their rumored fling, Bieber reportedly would visit her home ‘a lot to see her kids’ and they were said to ‘love’ spending time with him. 

Another source told People that Bieber got a ‘huge ego boost from hooking up with Kourt.’ 

At the time, the insider pointed out: ‘He is used to being swooned by young girls that have nothing else going on. Kourt is a hot mom with a career.’ 

Despite some saying he was a rebound for Kourtney, Bieber was said to feel lucky ‘she would go for him’ and would brag ‘about how hot she is.’ 

‘Even if she is using him to get back at Scott, he couldn’t care less,’ they added. 

In 2016, Bieber joked about the dating rumors about him and Kourtney as he quipped he was ‘being used’ while appearing on The Bert Show.  

‘For real, she’s great,’ he said about Kourtney. ‘I’ve known [the family] for years.’ 

Kourtney and Disick also share their eldest son Mason, 15, and daughter Penelope, 12.

In November 2024, Kourtney welcomed her baby boy, Rocky Thirteen Barker, with husband, Travis Barker. 

Meanwhile, Bieber became a first-time dad on August 23, 2024. 

He and his wife, Hailey Bieber, share a son named Jack Blues. 

Previously, in an episode of The Kardashians, which aired last year, Kourtney admitted she didn’t ‘know where [Reign] gets [his] sense of humor.’

‘He’s like a Jim Carrey,’ the mother-of-four said in a confessional after Reign started making silly faces on a trip to Australia.

‘I’m starting to get a lot of vibes, like his dad,’ Kourtney said, referring to Disick. ‘I think he’s starting to get that sense of humor. I’m like, just what we need.’ 

In a November episode of The Kardashians, Reign revealed he was looking forward to teaching his younger brother Rocky how to play video gamies like Call of Duty, Fortnite and Black Ops III and Zombies.