Inside Jasmine Stefanovic's epic bust-up that destroyed childhood friendship with bestie Keshnee Kemp and landed husband Karl in court: 'Pistols at dawn'

Jasmine Stefanovic is smarting from the loss of a childhood friend after their bust-up left her husband facing court. 

The shoe designer clashed with Karl Stefanovic's business partner, Keshnee Kemp, during a trip to London, after the Today host left his Channel Nine gig in June, the Daily Telegraph revealed on Thursday. 

Karl's relationship with his chief podcast producer Kemp 'irretrievably broke down' after the former TV star parted ways with the network over his interview with British right-wing activist Tommy Robinson.

'There was a massive blow up between Keshnee and Jasmine in London,' a close friend of the pair tells the publication. 

'It was like, "what the f**k, he has just lost his whole bloody income".'

The women, who grew up together in Queensland, had been friends since they were kids, and Kemp was tightly enmeshed in the Stefanovics' lives.

She attended birthday parties for their young daughter, Harper, and was at their 2018 wedding in Cabo, Mexico, as well as brokering an exclusive deal to cover the nuptials for WHO magazine. 

But that close bond has collapsed. 

'It is pistols at dawn. There is no fixing this relationship. There are no coffee catch-ups, no dinners, kids' birthday parties, none of it,' the friend says.  

Kemp on Monday took legal action to prevent Karl, 52, from removing her as a director of their company, 123 Podcast Pty Ltd. 

Justice David 'the Hammer' Hammerschlag - the chief judge of the NSW Supreme Court's equity division - heard details of the lawsuit during a brief hearing on Tuesday morning.

Karl and Kemp are joint major shareholders in the company, each holding an equal 45 per cent of the business, which was registered in February. 

Anthony Bell, Stefanovic's long-time accountant, business adviser and friend, holds the remaining 10 per cent. He is not involved in the dispute.

The dispute reportedly comes after Stefanovic allegedly told Kemp he wanted to take control of his Karl Stefanovic Show podcast venture, which she had helped establish and invested her own money into.

It remains unclear how much money the podcast was generating before it went on hiatus on August 24, when buyout negotiations between the founding shareholders stalled.

The Karl Stefanovic Show had amassed 215,000 YouTube subscribers last week and attracted sponsors including Rode microphones, wellness brand Revive5 and wagering company Neds.

Clothing company Ringers Western, which was also a sponsor, walked away from the podcast earlier this month. 

The podcast was, until recently, the top 'news' podcast on Apple's charts. 

It comes after the Daily Mail revealed that Karl was locked out from the Karl Stefanovic Show's social media channels, including Instagram and YouTube, in the wake of the spectacular breakdown of his relationship with Kemp.  

On Tuesday, he resumed posting on the channels, uploading a new episode of the podcast to both sites.