Growing up in the public eye has seemingly given 10-year-old Reign Disick the courage to speak out on gossip surrounding his family.

And this week, he's used his voice to address rumours that Justin Bieber is his 'real dad'.

For those in need of a reminder, the California youngster is the third child of mum Kourtney Kardashian and her former long-term partner Scott Disick. The couple split in 2015, shortly after Reign's birth, following nine years of on-again-off-again romance.

Kourtney, 45, and Scott, 41, are also parents to 15-year-old son Mason and daughter Penelope, 12.

Despite The Kardashian-Disick brood always maintaining that Scott is Reign's father - with no indication ever having suggested it is anyone else - it hasn't stopped fans of the family noticing somewhat of a resemblance between the pre-teen and singer Justin Bieber.

The Canadian musician, 31, has been known to have a close relationship with the family, being similar in age to Kendall Jenner - who also happens to be pals with his wife, Hailey Bieber.

Some conspiracy theorists claim that Reign's appearance seemingly mirrors that of the 'Baby' hit-maker, with some bizarrely demanding a paternity test on the child.

And while you mightn't expect such an outlandish rumour to reach the ears of the stars it involves, Reign has this week addressed the hotly-debated gossip during an Instagram Live.