The couple, who married in the Blue Mountains in 2016, shared the exciting news on Jesinta’s lifestyle app.
“My husband and I are so incredibly excited and overjoyed to announce that we have a baby on the way,” she wrote.
“The journey to get here hasn’t been easy and this little life is the greatest gift and we feel truly blessed and grateful that we have a little angel of our own,” she continued.
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“We have both dreamt of this for a long time and whilst the last 2.5 years have been physically and emotionally challenging, there’s nothing we would change as it’s brought us to this beautiful moment.
“The immense love we already have for our baby is indescribable and we can’t wait to meet our little miracle.”
Earlier this year, the 28-year-old model and TV host told The Daily Telegraph that she had decided to “let the universe decide” when they would fall pregnant.