Kate was dressed in the same MaxMara wrap she wore when she touched down in Sydney earlier this week, but changed into a $450 black and white geometric print dress by Tory Burch for the playdate itself.
George's debut engagement is a big highlight in the Duke and Duchess of Cambridge's historic tour of New Zealand. And the crowds were out in force to welcome the royal family.
Members of the public cheered and waved flags as William, Kate and George drove past enroute to the home of the Governor-General in Wellington.
Once inside the official residence, they were scheduled to meet with ten other families, all of whom have a baby born within a few weeks of George.
The lucky families chosen to meet with the Cambridges have already spoken of their excitement, and said they were looking forward to swapping stories about the trials and tribulations of being first-time parents.
Kate Bainbridge, 29, whose daughter Sophie was born on July 11, said, "I've had a few jealous looks from other parents when they found out we were meeting the Duke and Duchess.
"Even though we come from a very different background we have got a lot in common with the Duke and Duchess because we've been through the sleepless nights and we can talk to them about our experiences.
"We are all first-time parents, like them, so it should be quite easy to chat to them." Tristine Clark, New Zealand president of the parent support orgnaistion Plunket, which organised the event, said, "The parents are a spread of all the communities in New Zealand, including Maoris, Samoans, people of Chinese descent and gay couples.
"This is a very multi-cultural country and we wanted the Duke and Duchess to meet people from all backgrounds."