Few celebrity rumors have the staying power of the one linking Justin Bieber to Kourtney Kardashian’s youngest son, Reign Disick. It resurfaced so often that the 10-year-old finally addressed it himself in March 2025, calling the idea “crazy” during a livestream. This guide lays out the timeline, the math, and what the family has said so you can see exactly why the rumor never added up.

4 related posts

Reign Disick’s age (2025): 10 ·
Justin Bieber’s age at Reign’s birth: 20 ·
Reign Disick’s date of birth: December 14, 2014 ·
Scott Disick inheritance reported: $2 million (estimated) ·
Kourtney Kardashian’s age when dating Justin Bieber: 36

Quick snapshot

1Confirmed facts
  • Reign Disick was born on December 14, 2014, to Kourtney Kardashian and Scott Disick (ComingSoon)
  • Justin Bieber was 20 years old at the time, not 16 as Reign initially guessed (Gigwise)
  • Reign publicly denied the rumor in late March 2025 (People)
2What’s unclear
  • The exact nature and length of Kourtney and Justin’s reported 2015 dating period remain undocumented (Ynetnews)
  • Scott Disick’s precise inheritance amount has never been publicly confirmed (Tyla)
  • Why the rumor first gained traction has not been traced to a single origin point (Music Times)
3Timeline signal
  • Reign was born in December 2014; Bieber and Kourtney’s reported involvement came afterward in 2015 (ComingSoon)
  • The sequence makes paternity biologically impossible by several months (Marca)
4What’s next
  • Reign turns 11 in December 2025, which will likely resurface age-based comparisons (People)
  • Kourtney and Scott continue co-parenting, with Mason primarily living with Scott (Tyla)

The pattern across the cards: confirmed facts outweigh speculation, but the gaps remain because the family rarely engaged the rumor directly — until Reign did.

Fact Detail
Full name Reign Aston Disick
Date of birth December 14, 2014
Age (2025) 10
Parents Kourtney Kardashian and Scott Disick
Siblings Mason Disick, Penelope Disick, Rocky Thirteen Barker (half-brother)

How old was Justin Bieber when Reign Disick was born?

Justin Bieber was 20 years old when Reign Disick was born on December 14, 2014. Bieber’s birth date of March 1, 1994, is well-documented, and straightforward arithmetic puts him at 20 years and 9 months on Reign’s birthday (Gigwise entertainment publication). The confusion partly comes from a moment during Reign’s March 2025 livestream where the 10-year-old guessed Bieber was 16 at the time of his birth, an estimate that was quickly corrected in coverage (People celebrity news outlet).

Justin Bieber’s age when he dated Kourtney Kardashian

The implication: the timeline alone dismantles the rumor. Reign was born before reports surfaced linking Bieber and Kourtney, making any biological connection impossible (Marca sports and lifestyle outlet).

How the age gap disproves paternity rumors

A 20-year-old man cannot be the father of a child born 9 months earlier to a woman he had not been publicly linked to at the time. The paternity rumor relies on the false assumption that Bieber and Kourtney were involved before December 2014, but the timeline shows Kourtney was still in a long-term relationship with Scott Disick, with whom she shared three children (Tyla celebrity outlet). The confusion was amplified by the visual resemblance fans noticed between Bieber and Reign, a pattern-based form of speculation rather than a documented claim (Music Times entertainment site).

Bottom line: The pattern: this rumor survived for a decade because it was fun to speculate about, not because it ever had timeline support. The arithmetic has been public the entire time.

What is Reign Disick doing today?

Reign Disick is 10 years old as of 2025, living a fairly ordinary childhood for a kid in the Kardashian orbit. He appears on his mother’s social media, plays sports, and has started showing his own personality in livestreams — including the one that finally put the Bieber rumor to rest (People celebrity news outlet).

Reign Disick’s age and birthday

  • Born December 14, 2014, Reign Aston Disick is the third child of Kourtney Kardashian and Scott Disick (ComingSoon pop culture site)
  • He turns 11 in December 2025 (People celebrity news outlet)

Reign’s hobbies and social media presence

Reign has developed a playful livestream presence, joining platforms like TikTok where he has shown an interest in sports and gaming. His grandmother Kris Jenner’s family brand often highlights the grandchildren, and Reign’s candid personality has made him a recurring fan favorite (Tyla celebrity outlet). The uptick in his visibility has drawn new attention from a generation of younger fans who may not know the decade-old rumor’s origin (Music Times entertainment site).

How Reign responded to the Justin Bieber dad rumor

During an Instagram Live appearance in late March 2025, Reign addressed the long-running rumor directly. He said, “Justin Bieber is not my dad,” and identified Scott Disick as his father, adding that the idea was “crazy” (People celebrity news outlet). The clip spread quickly, with outlets covering it as the child’s own fact-check of a rumor the family had mostly ignored (Page Six celebrity news outlet).

Why this matters

A child having to publicly clarify his parentage is an awkward position, but Reign’s casual dismissal may finally retire a rumor that entertainment coverage kept recirculating for a decade (Yahoo Entertainment news aggregator).

Takeaway: Reign Disick addressed the Justin Bieber paternity rumor directly in March 2025, calling it “crazy” and identifying Scott Disick as his father.

Why does Mason not live with Kourtney?

Mason Disick, Kourtney’s eldest son, primarily lives with his father Scott Disick, while his siblings split time between both parents. The arrangement is part of the co-parenting structure Kourtney and Scott settled into after ending their relationship in 2015 (Tyla celebrity outlet).

Mason Disick’s current living arrangement

  • Mason, born December 14, 2009, has been increasingly seen in Scott’s Los Angeles home (Tyla celebrity outlet)
  • As a teenager, Mason has expressed a preference to live with his father, which both parents reportedly respect (Tyla celebrity outlet)

Who does Penelope Disick live with?

Penelope, the middle child, splits her time between Kourtney’s home and Scott’s residence, a pattern that keeps the siblings connected. Kourtney has publicly described the co-parenting relationship as a priority for keeping the children stable (Tyla celebrity outlet).

Kourtney Kardashian and Scott Disick’s custody agreement

The custody arrangement is informal compared to court-ordered plans, built around flexibility as the children grow. Kourtney’s 2023 marriage to Travis Barker and the birth of their son Rocky Thirteen added new dynamics, but the Disick children’s schedule with Scott has remained consistent (Ynetnews international news site).

The pattern: custody in blended families rarely stays static, and the Disick-Kardashian arrangement reflects that — the children’s preferences evolve as they age, and both parents accommodate them.

What condition did Kourtney’s baby have?

Kourtney Kardashian and Travis Barker’s son Rocky Thirteen Barker was born in November 2023, but the pregnancy was marked by a serious health scare. Kourtney underwent emergency fetal surgery during the pregnancy, a procedure she later described candidly on her reality show (Ynetnews international news site).

Kourtney Kardashian’s pregnancy with Rocky Thirteen Barker

  • Rocky Thirteen Barker was born on November 1, 2023 (Ynetnews international news site)
  • The pregnancy was Kourtney’s first with Travis Barker and came after years of fertility challenges (Ynetnews international news site)

Emergency fetal surgery details

During the pregnancy, doctors identified a condition requiring urgent intervention, leading to fetal surgery. Kourtney has been open about the emotional toll, describing the experience as terrifying and thanking medical staff for saving the baby’s life (Ynetnews international news site). The baby is now healthy and regularly appears in both parents’ social media posts.

The implication: Kourtney’s decision to share the story publicly was deliberate — it shed light on the realities of high-risk pregnancies in women over 40 while inviting scrutiny of her personal life (Ynetnews international news site).

Did Kourtney and Travis conceive naturally?

Yes — Kourtney Kardashian and Travis Barker conceived their son naturally, after having considered IVF earlier in their relationship. Kourtney has spoken about the surprise of the natural conception given her age and previous fertility struggles (Ynetnews international news site).

Kourtney and Travis’s fertility journey

  • The couple had discussed IVF options but paused the process before conceiving naturally (Ynetnews international news site)
  • Kourtney documented the pregnancy on her Hulu series, including the emergency surgery and recovery (Ynetnews international news site)

Kourtney’s weight after pregnancy

Kourtney has been open about the physical changes after her pregnancy, including weight fluctuation and the process of adjusting to life with a newborn at age 44. Her comments drew attention because they contrasted with the heavily curated image most Kardashian family members project (Ynetnews international news site).

The catch

The natural conception story matters in the context of the Bieber rumor because it shows how the internet fills gaps: when a timeline is unknown, speculation becomes the default narrative — even when the known facts contradict it (Marca sports and lifestyle outlet).

How much did Scott Disick inherit from his parents?

Scott Disick inherited an estimated $2 million after his parents, Jeffrey and Bonnie Disick, died in a car crash in 2013. The tragedy predated Reign’s birth by about 18 months and had a lasting impact on Scott’s life and his role in the Kardashian family dynamic (Tyla celebrity outlet).

Scott Disick’s parents’ death

  • Jeffrey Disick, a successful real estate developer, and his wife Bonnie died in a car accident in October 2013 (Tyla celebrity outlet)
  • News broke publicly in 2014, and the tragedy was a major storyline on Keeping Up with the Kardashians (Tyla celebrity outlet)

Inheritance amount and usage

The exact inheritance amount has never been formally disclosed, but reporting consistently estimates it around $2 million. Scott’s father was a successful businessman, and the estate included real estate holdings that Scott partially liquidated to fund his own ventures (Tyla celebrity outlet).

The pattern: the inheritance narrative underscores how much of what the public “knows” about celebrity finances in this family is based on estimates and reporting rather than confirmed records — a useful lens for evaluating the Bieber paternity rumor, which similarly rested on speculation rather than evidence.

Timeline: how the rumor survived a decade

Six dates tell the whole story — from Bieber’s birth to the 2025 denial — and each one clarifies why the paternity claim never held up.

Date Event
Justin Bieber born (Gigwise)
2013 Scott Disick’s parents die in a car crash (Tyla)
Reign Disick born (ComingSoon)
2015 Justin Bieber reportedly dates Kourtney Kardashian (Ynetnews)
Rocky Thirteen Barker born (Kourtney and Travis) (Ynetnews)
March 2025 Reign Disick addresses the Justin Bieber dad rumor (People)

The pattern: the rumor circulated for years because Bieber and Reign’s resemblance fueled it, but the sequence of events shows no window where Bieber could have been Reign’s biological father. The dates were never in dispute — they just got overlooked in favor of a better story (Music Times entertainment site).

Confirmed facts vs. what’s still unclear

Separating what is established from what remains speculative is the core of this story.

Confirmed facts

  • Reign Disick is the son of Kourtney Kardashian and Scott Disick (ComingSoon)
  • Justin Bieber was 20 years old at Reign’s birth (Gigwise)
  • Reign publicly denied the paternity rumor in March 2025 (People)
  • Kourtney and Scott share custody of their three children (Tyla)
  • Kourtney and Travis conceived naturally (Ynetnews)

What’s unclear

  • The exact details of Kourtney and Justin’s reported 2015 relationship timeline (Ynetnews)
  • Scott Disick’s exact inheritance amount (Tyla)
  • Why the rumor originally gained traction (Music Times)
  • Whether Kourtney will ever address the rumor directly (Ynetnews)
The upshot

The confirmed facts outnumber the unclear ones, but the information gaps persist because the family has rarely engaged with the rumor directly — until a 10-year-old decided he’d had enough (People celebrity news outlet).

What Kourtney and Reign have said

Both have weighed in on family matters, though only one has directly addressed the Bieber rumor.

“Justin Bieber is not my dad.” — Reign Disick, in a March 2025 Instagram Live appearance

Reign Disick, quoted by People

Reign added that the rumor was “crazy” and confirmed Scott Disick is his father.

Reign Disick, quoted by Page Six

“We have a great co-parenting relationship with Scott. The kids are our priority.”

Kourtney Kardashian, quoted by Ynetnews

The pattern: Reign’s own words carry more weight than a decade of fan theories. When the person at the center of a rumor states the truth plainly, the speculation loses its oxygen (Marca sports and lifestyle outlet).

Additional sources

economictimes.indiatimes.com, yahoo.com, yahoo.com, hellomagazine.com

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Frequently asked questions

What gender is Reign Disick?

Reign Disick is male. He was born December 14, 2014, to Kourtney Kardashian and Scott Disick (ComingSoon).

What is Justin Bieber test positive for?

Justin Bieber has been publicly open about testing positive for Ramsay Hunt syndrome in 2022, which caused facial paralysis and led to the cancellation of several tour dates. This is unrelated to the paternity rumor involving Reign Disick (Music Times).

Which Kardashian identifies as autosexual?

Kourtney Kardashian discussed the concept of autosexuality in an episode of The Kardashians, describing feeling turned on by herself. The comment became a talking point on social media but has no connection to the paternity rumor (Ynetnews).

How much does Kourtney K weigh now?

Kourtney Kardashian has not publicly shared a specific weight in 2025. She has spoken about body changes after pregnancy and postpartum fitness, but no verified current weight has been published (Ynetnews).

Does Reign Disick look like Justin Bieber?

Many fans have commented on a resemblance between Reign Disick and a young Justin Bieber, particularly in photos where both have similar hair and facial features. The resemblance is what fueled the paternity speculation, but Reign himself has denied that Bieber is his father (Music Times).

What did Reign Disick say about the Justin Bieber rumor?

In late March 2025, Reign said “Justin Bieber is not my dad” during an Instagram Live, calling the rumor “crazy” and confirming Scott Disick is his father (People).

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