CNN  — 

New Zealand’s Prime Minister Jacinda Ardern has revealed that she is pregnant, making her the first world leader since 1990 to be expecting a child while in office.

Arden said on Friday that she and her partner, Clarke Gayford, are due to have their first baby in June.

“Clarke and I are really excited that in June our team will expand from two to three, and that we’ll be joining the many parents out there who wear two hats,” she said in a Facebook post.

“I’ll be Prime Minister AND a mum, and Clarke will be ‘first man of fishing’ and stay-at-home dad.”

Speaking to reporters outside her home on Friday morning, Ardern said she would be taking six weeks leave following the baby’s birth.

“I am not the first woman to multi-task, I’m not the first woman to work and have a baby, I know these are special circumstances but there will be many women who will have done this well before I have,” she said.

Prime Minister Jacinda Ardern and her partner Clarke Gayford speak to the media January 19 in Auckland.

The New Zealand Prime Minister won’t be the first leader to have a child while in office. In 1990, then Pakistan Prime Minister Benazir Bhutto became the first serving elected leader to give birth.

Ardern said she learned she was pregnant in October during negotiations to form a minority New Zealand government, “but as many couples do in the early stages, we kept it to ourselves,” she said.

Her partner, Clarke Gayford, hosts a fishing and cooking program called Fish of the Day on New Zealand television.

During the 2017 election campaign, an interview with Ardern on New Zealand radio went viral and sparked a debate about sexism after a radio host quizzed her on her baby plans just hours into the job.

“I elected to talk about it, it was my choice … but for other women it is totally unacceptable in 2017 to say a woman should have to answer that question in the workplace,” she said.

Reaction on social media was largely positive following the news, with New Zealanders congratulating their prime minister on her announcement.

Morning sickness

When questioned by reporters, Ardern said while she didn’t underestimate the challenge of raising a child and running a country, she had a “lot of support” around her.

“And I would say to those people, none of them detected I had pretty bad morning sickness for three months of establishing the government,” she said.

The news came as a surprise, she said, as the couple had always hoped to have a child, “but we had been told we would need help for that to happen,” she said.

“We wanted a family but weren’t sure it would happen for us, which has made this news unexpected but exciting.”

Ardern said she asked Deputy Prime Minister Winston Peters to take on the role of acting prime minister for six weeks after the baby is born while she’s on parental leave.

When questioned by reporters, Ardern said it was “not unusual” for Peters to take up the position of Prime Minister. “He’s played that role before, when I go overseas he plays that role,” she said.

Congratulations flood in

At 37, Ardern became New Zealand’s youngest female Prime Minister in October after the left-wing Labour Party threw its support behind her.

A former DJ and a lapsed Mormon, Ardern is the closest thing New Zealand has had to a rock-star politician in years, attracting mass crowds to rallies and enjoying wall-to-wall press coverage.

Ardern took over the Labour Party in August after her predecessor stepped down as the party struggled in the polls. After she became leader of the party, she saw a huge boost in the polls, leading the press to coin the t