Cassandra Thorburn hits back after half-sister claims she's 'secretly OBSESSED' with Karl Stefanovic

Cassandra Thorburn, 49, has hit back at her estranged half-sister Allegra Bottrell-Thorburn, after she claimed that the journalist has a 'secret obsession' with her ex-husband Karl Stefanovic. 

Cassandra Thorburn hits back after half-sister claims she's 'secretly OBSESSED' with Karl Stefanovic

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