Danniella revealed her baby news with delight earlier this year.
She fell pregnant within months of meeting cage fighting fiancé Tom and within weeks of becoming engaged.
A source told The Sun: ‘This has hit Danniella hard as she was so excited to become a mum again.’
A spokesman for the actress told The Sun: ‘I can confirm she has had a miscarriage.
Danniella and Tom started dating soon after her split from husband of 13 years Kevin Jenkins.
On the couple’s shock pregnancy, a source reported to The Sun that ‘they are both over the moon. It’s not something theyplanned but their romance has been intense.’
They continued: ‘People may turn their noses up at the fact they’ve only been together three months but they’re really in love.’
Danniella is mum to 17-year-old son Kai and 12-year-old daughter Jodie from her marriage to ex husband Kevin.
She has yet to comment herself on the tragic loss.
It has been a rough year for the actress, with thieves reportedly targeting her home numerous times.