Jacinda Ardern yet to receive invitation to Prince Harry and Meghan Markle's royal wedding

Prime Minister Jacinda Ardern has not received an invitation to attend Prince Harry and Meghan Markle's wedding, but with the official guest list yet to be confirmed it's possible hers could be in the mail.

However, Ardern has previously said she does not expect an invitation to the May nuptials, and a spokeswoman repeated today that she is "delighted for the couple".

She sent a message of congratulations when the pair's engagement was announced in November last year.

When asked whether the Prime Minister intended to send an engagement present, the message was "the extent of it for now", the spokeswoman said.

Ardern had said she would send a "suitably Kiwi" gift once the couple were married.
Sending engagement gifts is not usual practice.

The royal wedding guest list is not confirmed yet, however there are rumours that Trump will not be invited - though it is possible his predecessor, former United States President Barack Obama and his wife Michelle might be.

Tennis legend Serena Williams is also rumoured to be attending, as are Prince Harry's ex girlfriends, Chelsy Davy and Cressida Bonas.

Prime Minister Jacinda Ardern commenting on Prince Harry's engagement in November last year. She wished the happy couple well. Photo / Mark Mitchell

Much was made of Prince Harry's engagement to the 36-year-old American actress when it was announced last year.

The couple had been dating for 16 months, but the prince said he knew Markle was "the one" since their very first date.

Kensington Palace said the prince designed Markle's engagement ring - using two stones that belonged to his late mother.

The two outside stones are diamonds from the personal collection of Diana, Princess of Wales. At the centre is a diamond from Botswana, a country that holds special significance for Harry, who has visited many times since he was a child.

It is also a place the couple have spent time together.

At the time, Ardern said she hoped the high profile couple had time to enjoy the news privately.

They obviously lead an incredibly public life, but that doesn't make these moments any less personal and any less special, Ardern said.

"I think it is incredibly exciting. Who isn't moved by someone's impending marriage, particularly one of this scale. I think it will be an extraordinary event.

Asked at the time media if she would get an invitation to the wedding, Ardern said she held no expectations in that regard.

"I don't think anyone ever has any expectations about wedding invites, and the same goes for me in this circumstance. For me it is just a matter of wishing them well."