Prime Minister Jacinda Ardern's heartfelt baby advice for dad-to-be Sam Wallace and pregnant partner Sarah Bowman

Toni Street and Laura McGoldrick surprised Sam Wallace and his pregnant partner Sarah Bowman with a surprise baby shower … and a very special guest attended.

New Zealand Prime Minister Jacinda Ardern stopped by to congratulate the expectant couple – who are set to meet their baby boy any time around December 23.

• READ MORE: Watch what happened when Toni and Laura hooked Sam up to a LABOUR PAIN SIMULATOR

Jacinda Ardern also gave some heartfelt advice to Sam and Sarah, passing on what she had learned from being a mother to 6-month-old daughter Neve.

Watch above to hear the sweet things she had to say.

• READ MORE: Toni and Laura SHOCKED over Sam's plan to make pregnant partner WALK to the hospital ...

The PM wasn’t the only one to impart their parenting wisdom, mothers Toni and Laura also shared their best advice, as well as Hits listeners, who had some gems to share.

One father even brought tears to the eyes to everyone in the room.

Watch their advice below: