According to the reports, the model-turned-designer appeared to have a 'small baby bump' at last week's Melbourne Cup Day Carnival.
When approached for comment regarding the explosive claims, the Today show host's manager Sharon Finnigan said, 'Absolute bulls****'
Sharon told The Daily Telegraph that Karl and Jasmine are 'disgusted' and 'offended' by the claims.
Finnigan went on to say, 'We are disgusted at what's being printed.'
Karl and Jasmine went public with their relationship in February of this year, with the TV host opening up to Stellar magazine about the budding romance.
''I certainly did not expect to meet someone five months after I broke up with my wife. That was not planned, I did not know her before,' he relayed.