New Zealand Prime Minister Jacinda Ardern, the world’s youngest female leader, has given birth to her first child, a daughter.

The baby, weighing 3.31 kilograms (7 pounds 3 ounces), was delivered at 4:45 p.m. on Thursday at Auckland Hospital, Ardern’s office said in a statement. Both mother and baby are doing well, it said. The couple had said the child was due on June 17.

“I’m sure we’re going through all of the emotions new parents go through, but at the same time feeling so grateful for all the kindness and best wishes from so many people. Thank you,” Ardern said in the statement.

Ardern, 37, becomes the first leader since former Pakistan Prime Minister Benazir Bhutto in 1990 to have a child when in power. Coincidentally, the baby was born on Bhutto’s birthday. Still, Ardern acknowledged when announcing her pregnancy in January that she won’t be the first woman to have to juggle family and work commitments, nor the first woman in politics to have a baby.

The Labour Party leader won plaudits early in last year’s election campaign for dismissing questions about whether she intended to become a mother, saying it was unacceptable that women should have to answer such a question in the workplace. She said she was lucky that partner Clarke Gayford can stay home to be primary caregiver when so may parents juggle the care of new babies.

Ardern plans to take just six weeks leave from parliament. Her deputy Winston Peters, leader of coalition partner New Zealand First, is Acting Prime Minister in her absence.

Ardern turned around support for Labour after being elected leader less than eight weeks before the Sept. 23 election, stirring up what media dubbed “Jacinda-mania” with her appeal to younger voters and her promises to tackle social issues.

Labour won 37 per cent of the vote but trailed the ruling National Party, which got 44 percent, requiring Ardern to enter negotiations with Peters and the Green Party to form a government. She said she first knew of her pregnancy in the midst of those talks.