Finance Minister Penny Wong and her partner Sophie Allouache have become parents for the first time.

Ms Allouache gave birth to a baby girl, named Alexandra, on Sunday morning at Adelaide's Women and Children's Hospital.

"She's wonderful, just wonderful," Senator Wong told News Limited.

"Sophie and I are delighted beyond words."

Alexandra was conceived using IVF and sperm from a donor known to the couple.

Senator Wong has said the biological father is a friend who will be known to the baby, but his name is not expected to be made public.

"We are extremely grateful to our IVF service and staff, and to our donor, for giving us the opportunity to raise a child together," Senator Wong said.

The senator, who drove a hard-fought change to the ALP's platform on gay marriage earlier this month, is now expected to take some time off after Prime Minister Julia Gillard sent her congratulations.

"The PM's given me a bit of leave so I'm going to take time off and hopefully we can get the important things in life, like feeding and nappy changing and sleeping, under control," Senator Wong said.

Read More: http://www.abc.net.au/news