Twitter reacts to Ardern baby news: 'Such a great role model'

Social media users and politicians have congratulated the Prime Minister, with many of them saying that it is "wonderful news for Jacinda Ardern, women and New Zealand".

Ms Ardern, who became Prime Minister in October, announced this morning, via Instagram, that she and partner Clarke Gayford were expecting a baby in June.

Former Prime Minister Helen Clark was among the first of many to congratulate Jacinda Ardern on her pregnancy.

Ms Clark said via a tweet it was going to be a "super busy year" with "much to look forward to".

"Every #woman should have the choice of combining family & career."