Naming their daughter Hannah, the couple had the help of the same sperm donor they used to conceive their first child, Alexandra, who is now three years old.
While they have not revealed the identity of the sperm donor, when announcing their second pregnancy in December last year Senator Wong said Alexandra was helping spread the good news.
“Like all families we had to think about whether we tell the toddler because she’s notorious – she doesn’t know what a secret is,” Senator Wong told The Advertiser.
“But we decided to tell her because we thought it was important she knew.
“Which was fine except at the Labor convention she sat reading The Gruffalo to a baby over and over again… I came over and asked how it was going and a friend said ‘it’s all really good but she’s just told everyone Mummy’s got a baby in her tummy’.”
And baby Hannah isn’t the only recent arrival in the Labor party, with South Australian MP Amanda Rishworth giving birth to her son, Percy James, in March.
Labor frontbencher Kate Ellis also due to give birth later this year.