Sylvia and husband Peter Stefanovic announced they were expecting their first child in August.
Peter, 37, younger brother of axed Today star Karl Stefanovic, met Sylvia at work when they were put together for co-hosting duties on The Weekend Today Show.
He popped the question on holiday in France in 2016, getting down on one knee at a vineyard in Bordeaux.
In April 2017, they said their "I dos" in an intimate ceremony at Kangaroo Valley in New South Wales.
The pair weathered a difficult period towards the end of 2018 when Peter was axed from Nine following the Uber-gate scandal when he was overheard by an Uber driver whinging about the network and his colleagues with his brother Karl.
Sylvia and Karl were also let go from the Today breakfast show.
However, things have been looking up for the pair again after Peter landed a gig at Sky News' flagship program, First Edition.
While, Sylvia joined Channel Nine's prime time news program, A Current Affair.
"It has been a really interesting and fun year," she said at the Logies earlier this year, admitting that she's loving her new TV gig. "I love the team, a great team."