Zara and Mike Tindall celebrate New Year's Eve with Rebel Wilson in Sydney

Two members of the British royal family have chosen to ring in the new year in Australia alongside one of our most famous exports.

Zara Tindall, 38, who is the Queen's granddaughter, celebrated the start of the new decade with husband Mike at a lavish party on Sydney Harbour with actress Rebel Wilson.

The movie-star posted several photos of the bash to her official Instagram account.

And it looks like one fun party indeed.

"We crushed Sydney New Year's Eve! We're in the future now in 2020! What a fun gang to celebrate with and thanks to our gorgeous hostess Heloise for throwing an amazing bash with clearly the BEST views," Rebel captioned the photos.

It looks as though their party was held inside one of the multi-million dollar apartments at Circular Quay, which boast sweeping views of the Sydney Harbour bridge and iconic New Year's Eve fireworks display.

Prince Harry's close friend, Argentinian polo player Ignacoio 'Nacho' Figueras was also there with his wife. He's here for the Magic Millions polo tournament on the Gold Coast.

That's also what's brought Zara and her former professional rugby player husband to Australia again.

But this time they've brought along both daughters, Mia, five, and Lena, one.

"Early January is bleak over here so it's nice to go and have a bit of sun," Mike told the Australian Women's Weekly. "I love the lifestyle of Australia and the ability to get up early, go on the beach – especially for the kids, taking them in the ocean is brilliant."

"Mia loves swimming," Zara told the publication. "Of course, the climate allows you to be able to go swimming all day every day. When we first took her to Australia she was 11 months old; we kickstarted her love of water."