New Zealand not ready to discuss becoming a republic - Prime Minister

Prime Minister Jacinda Ardern is excited about the impending Royal wedding, despite being open to New Zealand becoming a republic.

"You can hold those views and still be excited about weddings, which is how I'd describe myself," she said.

Prince Harry and US actress Meghan Markle announced their engagement earlier today, and will marry within the next six months.

Before the election Ms Ardern said New Zealand should have a conversation about whether to become a republic.

But she said it's not an urgent priority right now for New Zealand, and now is not the time to have the conversation.

"I don't think there's an appetite in New Zealand currently for that conversation," she said on Tuesday morning.

Ms Ardern said she sent a letter to Prince Harry and Megan Markle this morning.

She also plans to ask her team whether she can send a card, because letters "seem a bit impersonal".

"It's incredibly exciting, who isn't moved by someone's impending marriage, particularly one of this scale? I think it'll be an extraordinary event," she said.

The Prime Minister said New Zealand won't send an engagement gift, but will send a wedding present as is the usual practice.

"That gives us plenty of time to think about what might feel appropriate and suitably Kiwi."

She has no expectations about whether she would be invited to the wedding.

"For me it's just a matter of wishing them well."

If she did get an invite, it'd depend on the scheduling as to whether she'd be able to attend.

"It's not about us and whether we're invited, it's just about congratulating them."