Cassandra Thorburn has broken her silence on ex husband Karl Stefanovic's engagement to designer Jasmine Yarbrough.
The 46-year-old told Fairfax Media that she wasn't bothered by the announcement.
'His engagement doesn't register with me on any level,' she said.
'I am just focused on helping those affected by the ever-changing landscape of my ex-husband's life, to navigate it.'
The 34-year-old Mara and Mine designer showed off her diamond ring during a lunch with friends.
Rumours claim Stefanovic, 43, proposed during her recent birthday celebrations.