Antonia Kidman, 42, has given birth to her sixth child three weeks earlier than expected.
Antonia and her husband Craig Marran welcomed baby boy Alexander Norman Kidman Marran in the early hours of Monday morning in Sydney.
The baby weighed a “healthy 3kg”, despite his premature arrival.
“It is with great delight Craig and I are thrilled to advise that Alexander Norman Kidman Marran arrived safely in the early morning of the 3rd of December weighing a healthy 3kg,” Antonia said in a statement.
“Alexander caught us by surprise arriving earlier than anticipated with Craig and Sybella jumping on a flight from Singapore and arriving this morning.
“Alexander’s brothers and sisters are all excited and we are looking forward to spending a wonderful family Christmas together.
“We want to thank everyone for their kind wishes at this special time in our lives.”
Antonia and Craig married in 2010 and welcomed their first child, son Nicholas, eight months later.
Antonia also has four children, Lucia, 14, Hamish, 11, James, nine, and five-year-old Sybella, with ex-husband Angus Hawley.