The Chinese financial hub maintains some of the strictest quarantine measures in the world, an approach that has kept virus cases low but left most residents cut off from overseas loved ones for the last 18 months.

Arrivals from high-risk countries have to stay in hotel quarantine for 21 days, while lower-risk countries have seven days hotel quarantine followed by a further seven days of self-monitoring.

But Kidman, 54, has been allowed to circumvent those rules.

Hong Kong's Commerce and Economic Development Bureau confirmed the Australian actress and other film crew had been granted an exemption "to carry out designated professional work".

Those exempted must take three coronavirus tests over two weeks following their arrival.

The city's tabloids have closely followed Kidman's appearances in Hong Kong since touching down last Thursday in a private jet from Australia, including shopping two days after her arrival and later filming in the city's Sai Wan district.