Labour leader Chris Hipkins says New Zealand should use Dame Jacinda Ardern's star power. 

Prince William bestowed Ardern her Damehood at an investiture ceremony at Windsor Castle.

Hipkins says Ardern could help New Zealand's image on the world stage in things like trade and tourism. 

He says she's a uniting force. 

"Actually, I know a lot of National Party people who didn't vote Labour, wouldn't vote Labour - but they still respect Jacinda. And they would still like to see her more positively reflected by the country."

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