Finance Minister Grant Robertson and Justice Minister Andrew Little are among the first people to publicly wish Prime Minister Jacinda Ardern happy birthday on her special day.
Today marks a milestone for Ardern, who turns 40.
"Happy birthday to Labour Leader and Prime Minister Jacinda Ardern," Little posted on Facebook.
"She was surprised with a cake and birthday singalong at Newton Markets yesterday."
Also attached was a video of the singalong and a surprised Ardern thanking everyone and cutting the cake.
Robertson posted on Instagram along with a few snaps of the pair together.
"There have been good times, crazy times and sad times but it's always been my honour to stand shoulder to shoulder with my friend @jacindaardern," he wrote.
Ardern and Robertson have always been united in the halls of power, but have also been known to enjoy a bit of footy banter.
Last month the pair traded photos in their supporter's gear, after Robertson - a Highlanders fan - gave a shout-out to his Chiefs-supporting boss.
Robertson's heartfelt birthday post has already sparked dozens of messages from fans echoing happy birthday wishes.
"Happy 40th birthday to the world's greatest leader. What a woman, what a leader, what a force!," one person wrote.
So far this week, Ardern has kept quiet about her big day apart from a post which included a demolished cake at Wellington's Newtown markets.
Labour MP Paul Eagle baked the cake himself as a surprise for his boss.