‘Welcome to the world Emmy Parker Goodrem my beautiful niece,’ Delta wrote, alongside a photo of her cradling the adorable newborn baby.
Little Emmy is a second addition to the family for Delta’s brother Trent – who also has a son, Nate, 22 months.
Speaking previously to Who magazine, 33-year-old Delta said that she had a lot of love for the little boy.
‘[Right now] my love is directed to my beautiful baby nephew,’ she said, while acknowledging that she always knew that having children would come later in life for her.
‘I always knew it would be a little later in life for me, I always knew that,’ said The Voice coach of becoming a mum.
‘Of course I look forward to when that chapter is, and that will be a beautiful moment.’