Nicole Kidman and Keith Urban have added a second daughter to their family, born through a surrogate mother.
The couple announced today the arrival of Faith Margaret Kidman Urban, born on December 28 at the Centennial Medical Centre in Nashville, Tennessee.
She was born under a veil of secrecy involving the celebrity couple booking out the entire top floor of the hospital and secretly entering the facility via a staff-only service elevator.
Faith Margaret is a biological sibling to Sunday Rose, their two-year-old daughter.
Kidman and Urban, both 43, released a statement saying they were "truly blessed" and thanked everyone for their support, "our gestational carrier" in particular.
Our family is truly blessed, and just so thankful, to have been given the gift of baby Faith Margaret
"Our family is truly blessed, and just so thankful, to have been given the gift of baby Faith Margaret," the statement, posted on Urban's website, read.
"No words can adequately convey the incredible gratitude that we feel for everyone who was so supportive throughout this process, in particular our gestational carrier."
After Kidman gave birth to Sunday Rose in July 2008, the couple tried to conceive again naturally, but failed.
They tried again through in-vitro fertilisation (IVF), but were not successful. The couple were then advised by doctors to use a surrogate instead.
Kidman credited her first daughter's unexpected appearance to her swimming in the waters of a small Australian outback town during the filming of Australia.
She and six other women became pregnant after swimming in Kununurra.
Kidman has two adopted children, son Connor, 15, and daughter Isabella, 18, from her first marriage to US actor Tom Cruise.
She and Cruise split in 2001 and she married Urban in June 2006 at the Sydney suburb of Manly.
No other details about Faith Margaret were available, but Kidman and Urban probably deserve this year's best actress and actor Academy Awards for keeping Faith a secret.
Kidman has been on the hustings in the US, Australia and Europe undertaking numerous interviews to promote her passion project, Rabbit Hole, a harrowing drama she produced and stars in as a mother dealing with the sudden death of a young son.
Urban has also sat through plenty of interviews.
The couple walked what the Guinness Book of Records called the longest red carpet in the world at yesterday's Golden Globes in Los Angeles and managed to keep Faith a secret.
Kidman missed out on the Golden Globe best dramatic actress award for Rabbit Hole, with, ironically, expectant mother Natalie Portman taking the gold statue for her performance in Black Swan.
Kidman has hinted about her desire to have children and said in the latest issue of the the US edition of Harper's Bazaar magazine that Isabella and Connor do not regularly visit her in Nashville.
"No, they don't," Kidman said.
"They're not crazy about Nashville. They're so grown up now.
"I mean, they're adults."