Cassandra Thorburn opens up about Karl Stefanovic for the first time in years — and the p:ainful label she was left with
Ten years after Cassandra Thorburn and Karl Stefanovic announced the end of their long marriage, Cass is reflecting on a chapter of her life that she says was never truly hers to tell.
For years, the mother-of-three was often defined in the public eye by her relationship with one of Australia’s most recognisable television presenters.
But a decade on, her life looks very different.
She has built her own career, stepped into television again, explored the realities of divorce and, most recently, faced one of the most confronting challenges of her life — a rare and aggressive form of breast cancer.
Now, Cass says there is one thing she is determined to do differently this time: tell the story herself.
A marriage that once defined her public life
Cassandra Thorburn and Karl Stefanovic first met in the 1990s while working in regional Queensland and went on to build a family together.
They were married for 21 years and welcomed three children: Jackson, Willow and River.
Their separation in 2016 attracted enormous media attention, with the breakdown of their marriage becoming a highly publicised chapter in Australian entertainment news.
Karl eventually went on to marry shoe designer Jasmine Yarbrough, with whom he welcomed daughter Harper.
Cass, meanwhile, took a very different path.
Over the years she appeared on Dancing With The Stars, explored podcasting and continued building a life away from the television career that had made her former husband a household name.
But, according to Cass, the public never completely allowed her to step outside the shadow of that marriage.
“They decided who they wanted me to be”
Speaking to The Sydney Morning Herald, Cass revealed that one of the most difficult parts of life after the divorce was being repeatedly reduced to the label of the “bitter ex-wife”.
She believes that label said more about the way the media viewed divorced women than it did about who she actually was.
“The media wanted me to be a bitter ex-wife,” she said.
Cass questioned why there seemed to be an accepted label for an ex-wife, while men were rarely subjected to the same kind of description.
For her, the experience left a lasting distrust of the media.
“I have an inherent distrust of the media because they decided who they wanted me to be, not who I am,” she said.
It is a feeling that has stayed with her for years.
She believes the media were less interested in understanding who she was during her marriage, but became far more interested in defining her once the marriage was over.
And that experience would later influence the way she chose to speak about something much more personal.
This time, Cass wanted control of the story
In February 2026, Cass revealed that she had been diagnosed with triple-negative occult breast cancer — a rare and aggressive form of breast cancer.
Rather than allowing the news to emerge through speculation or second-hand reports, she chose to announce it herself.
One of the first images she shared showed her with her hair freshly shaved.
It was an intensely personal moment, but for Cass it was also about having control over the parts of her diagnosis she could control.
“I’m not interested in hiding,” she said, explaining that she wanted to be open for herself and for her adult children.
“I can tell this story myself.”
The diagnosis came after a routine mammogram, with NSW BreastScreen detecting an unusual area that ultimately led to her diagnosis.
Her particular form of cancer is unusual because no primary tumour can be detected in the breast, despite cancer being found in the lymph nodes. It is known as occult breast cancer.
Cass has since used her experience to encourage other women not to ignore breast-screening reminders.
For her, a routine appointment became the moment that changed everything.
“I was the one in seven that day”
Cass has spoken candidly about the shock of discovering she had breast cancer.
In one of her early posts about the diagnosis, she reflected on how common breast cancer is among women in NSW — and how, on that particular day, she became one of those statistics.
She has also spoken about the fear of discovering that her cancer was so rare.
But rather than asking why it happened to her, Cass has chosen to focus on what she can do with the experience.
Her message has been consistent: screening matters, early attention matters, and women should not put off their mammograms.
“I’m not walking a path that is not well travelled by many women before me,” she said.
A family that rallied around her
Throughout the ordeal, Cass has made it clear that she is not facing the experience alone.
Her three adult children — Jackson, Willow and River — have been among her strongest sources of support.
Willow, who had been living and studying in London, returned to Australia after learning of her mother’s diagnosis.
The timing was particularly poignant.
Cass and Willow had been planning a driving holiday around the UK, but those plans changed when Cass became ill.
Instead, Willow came home to spend time with her mum.
The decision also meant putting her own birthday plans aside so she could be with her family.
The siblings have continued to rally around their mother during treatment, turning what could have been an intensely isolating experience into something shared by the family.
The question of Karl
Despite everything that has happened over the past decade, Cass says she has not heard from Karl since publicly revealing her diagnosis.
Asked about whether he had contacted her, she simply confirmed that he had not.
The answer was striking in its simplicity.
After 21 years of marriage, three children and a decade of separate lives, their relationship now exists largely through the family they share.
Cass has chosen not to dwell on what that relationship looks like today.
Instead, her focus appears to be firmly on her children, her recovery and the life she has built independently.
Karl’s life moved in a different direction too
In the decade since their separation, Karl’s career and personal life have continued to evolve.
He married Jasmine Yarbrough in 2018 and became a father to Harper, his fourth child.
Professionally, he remained one of Australia’s best-known television personalities before eventually leaving his long-running role on Today and moving into a new independent media chapter with his own podcast.
That path has been very different from Cass’s.
But while Karl has continued to occupy a prominent place in Australian media, Cass has spent the same decade quietly creating a life that is increasingly her own.
A decade later, the story is no longer about the divorce
Perhaps the biggest change is that Cass no longer wants her identity to begin with the words “Karl Stefanovic’s ex-wife”.
She has experienced divorce, motherhood, television, advocacy and now a rare cancer diagnosis.
She has also faced the uncomfortable reality of being publicly defined by people who, in her view, never truly knew her.
That is why her decision to speak openly about cancer carries a deeper meaning.
This time, she refused to let someone else tell the story first.
She chose the photograph.
She chose when to speak.
And she chose what the world would hear.
Ten years after a marriage that once dominated the headlines came to an end, Cassandra Thorburn appears determined to make sure the next chapter belongs entirely to her.