Prince William, Sir David Attenborough, Prince Charles and Prince Harry pose for the cameras (Image: PA) Harry, 34 and William, 36, joined their father Prince Charles, 70, at the star-studded event to showcase Sir David Attenborough latest series. The new documentary draws attention to climate change which is a cause close the the Duke of Susses and Cambridge’s heart. The trio were all smiles and looked dapper in their black suits and bow ties. Related articles Meghan Markle news: Have Meghan and Harry chosen NEW baby name? Meghan Markle news: Everything we know about Frogmore Cottage Among the high-profile attendees in the Capital were David Beckham and his son Brooklyn as well as singer Ellie Goulding. This evening concludes a busy day for Prince Harry who finally moved into his new home at Frogmore cottage with his pregnant wife Meghan Markle. The Duke and Duchess of Sussex secretly moved into their love nest after it was given a huge refurb, which began late last year. The Quartet enter the Natural History Museum for the premier (Image: PA) David and Brooklyn Beckham also attended the Netflix premier (Image: PA) Their new residence is about half a mile south of the Queen's favourite residence Windsor Castle, is close to Frogmore House where the duke and duchess held their evening wedding reception. Ahead of the much anticipated series Sir David highlighted the importance of understanding the natural world he stated “if we damage the natural world, we damage ourselves”. He told the BBC: “You, me and the rest of the human species are critically dependent on the health of the natural world. “If the seas stop producing oxygen, we would be unable to breathe, and there is no food that we can digest that doesn’t originate from the natural world.” MORE TO FOLLOW All rights reserved for this news site express.co.uk and under his responsibility