Jacinda Ardern reveals what New Zealand will be sending new royal baby

The new royal baby is already being showered with presents, including from New Zealand.

Their Royal Highnesses, the Duke and Duchess of Cambridge, welcomed a baby boy overnight.

A collection of New Zealand childrens' books and a blanket made of New Zealand wool will be sent to the baby, Ms Ardern told The AM Show.

The Prime Minister also added a personal gift.

"I've had a family member of mine whip together a personal gift... a white linen romper with a Buzzy Bee lining on it."

Ms Ardern revealed the mastermind behind the romper is her sister-in-law,

"She's an excellent sewer."

She said a note will be added to indicate the personal nature of the gift.

As to if she herself will receive a present from the royals, the Prime Minister laughed and said she wasn't expecting anything.

The name of the royal baby is yet to be revealed.