Prime Minister John Key has congratulated Prince William and the Duchess of Cambridge on the birth of their son and unveiled the official New Zealand gift.
"This is wonderful news for Prince William and Catherine," Mr Key said.
"The birth of a child is a time of great joy and excitement, and I know they will make excellent parents."
New Zealand's official gift to the Royal couple was a hand-spun, hand-knitted fine lace shawl, similar to the one the country gave when Prince William was born.
The intricate shawl was designed by Margaret Stove, who was also responsible for Prince William's shawl. Cynthia Read spun the wool and knitted the shawl.