Stephen Colbert gifts Jacinda Ardern and Clarke Gayford engraved tumblers for an engagement present

Jacinda Ardern's fiancée Clarke Gayford has revealed the engagement gift given to them by The Late Show host Stephen Colbert when he was in New Zealand last month.

Ardern appeared in a pre-recorded segment with Colbert, which was put together during his visit.

Kiwi taxpayers stumped up $100,000 for five segments to help boost tourism numbers in the US.

Gayford claimed there had been a spike in Google searches for New Zealand since The Late Show segments aired, but according to Google Trends searches for NZ in the US have dipped in the past month.

Stephen Colbert gifts Jacinda Ardern and Clarke Gayford engraved tumblers for an engagement present
Photo credit: Google

Tourism New Zealand estimates the country's television appearance on The Late Show is worth $5 million in advertising.

Gayford revealed on Instagram on Tuesday that boosting tourism wasn't the only gift Colbert gave to New Zealand.

"I would also like to thank @stephenathome for his wonderful engagement gift - His and Her etched tumblers, and by 'His and Her' I mean one says 'Mr' and the other says 'Prime Minister of New Zealand and leader of the New Zealand Labour Party'.

"These are going straight to the pool room."

Colbert and Ardern had long been planning The Late Show host's trip to Aotearoa.