Prince Charles, Prince William, and Prince Harry attended the global premiere of Netflix’s Our Planet at the Natural History Museum in London on Thursday.

Narrated and hosted by Sir David Attenborough, the event marked a rare joint engagement for the three royals without their wives the Duchess of Cornwall, Duchess of Cambridge, and Duchess of Sussex.

The princes looked dapper in black suits and bow ties as they were greeted on the museum's steps by Sir David Attenborough, whom William interviewed about the importance of the natural world at the World Economic Forum in January.

Before the premiere, the princes mingled with TV stars and celebrities including David Beckham with his son Brooklyn and singer Ellie Goulding.

Duchess Emma Mackey, best known for her role in Netflix's s** Education, also attended in a stunning red Grecian style dress.

The royal family's support for action against climate change was the main reason for their attendance.

Prince Charles made his first speech on the environment in December 1968 and continued to work with organisations to promote sustainable ways of living while warning of climate change's irreversible effect.

He has launched numerous related initiatives over the years, including the International Sustainability Unit and the Prince's Rainforest Project.

Prince William launched a collaboration between seven of the world's most influential conservation organisations called United for Wildlife and has worked to combat the illegal wildlife trade.

For his part, Prince Harry is also passionate about the issue, supporting the Queen's Commonwealth Canopy Initiative through the years as well as focusing on work in Africa, where he is the president of African Parks and patron of the Rhino Conservation Botswana.

During the premiere, Prince Charles addressed the crowds in a speech and paid tribute to Sir David Attenborough for all he has done over the years to bring wonder and fascination to the natural world.

He expressed his pride in how his sons have taken up the causes of his interest and are now keen to find a solution to the problem of climate change.

The eight-part series, narrated by Sir David Attenborough, has taken four years to film, involved 3,500 filming days with 600 crew and aims to reach one billion people on the streaming service Netflix.

Created in partnership with Silverback Films, and WWF, it showcases the planet's most precious species and fragile habitats, revealing amazing sights on Earth in ways they've never been seen.

The event came amid a busy time for the royals, with Prince Harry set to become a dad in the coming weeks as his wife Meghan prepares to welcome their first baby.

It was confirmed on Thursday that the couple have also just moved into their newly renovated home Frogmore Cottage in Windsor.

Meanwhile, Prince William has been spending the Easter holidays at his Norfolk home, Anmer Hall, with Kate and their three children.

Later in the month he will also celebrate Louis' first birthday, as well as his eighth wedding anniversary with the Duchess of Cambridge.

However, William may have to miss both milestones, as he is set to carry out an official visit to New Zealand to honour the victims of the Christchurch mosque's terrorist attacks.

The joint engagement of Prince Charles, Prince William, and Prince Harry at the global premiere of Netflix's Our Planet highlighted the royal family's support for action against climate change.

The event, which was narrated and hosted by Sir David Attenborough, marked a rare occasion where the three princes attended without their wives.

They were dressed in black suits and bow ties and were greeted on the museum's steps by Sir David Attenborough.

Before the premiere, the princes mingled with TV stars and celebrities including David Beckham with his son Brooklyn and singer Ellie Goulding.