The actress gave birth to her first child with husband Keith Urban, 40, yesterday morning.
And her mum Janelle and sister Antonia have flown in from Australia to congratulate her.
‘The birth of Nicole and Keith's daughter is such wonderful news and a beautiful addition to our family,’ Antonia tells People.
‘We're all absolutely thrilled with the new arrival.’
Nicole, 40, is already mum to adopted children Isabella, 15, and Connor, 13, with ex husband Tom Cruise, 45.
She and Keith married in June 2006.