All the best photos from the 50th anniversary of Prince Charles's investiture!

The Queen, the Duchess of Cornwall, the Duke and Duchess of Cambridge, and the Duke and Duchess of Sussex came together at Buckingham Palace on March 5 to celebrate the 50th anniversary of Prince Charles's investiture!
Her Majesty hosted a reception to mark the anniversary – the day Charles became the Prince of Wales, on July 26, 1958 when he was only nine years old. He was formally invested with the title by Her Majesty The Queen on July 1, 1969 at Caernarfon Castle.
Click through to see all the photos from the monumental celebration...
Photo: © Dominic Lipinski / POOL / AFP

The group arrived inside Buckingham Palace together, looking every inch the stylish group of royals they are! The Queen, ever a lover of colour, dazzled in a beautiful purple blazer and white-and-purple satin dress for the occasion, while her son looked dapper in a grey suit.
Photo: © Dominic Lipinski - WPA Pool/Getty Images

The pregnant duchess – who's due to welcome her and Harry's royal baby in the spring – kept her baby bump warm in her white 'Crombie' coat by Amanda Wakeley (the one she wore for last year's Commonwealth Day.) She carried her 'Oyster' satin clutch by Wilbur and Gussie, and accessorized with a beautiful pair of bar earrings by Canadian jeweller Birks, as well as her Pippa Small 'Wajiha' cuff. Anchoring the ensemble were her 'Pump It Up' shoes by Paul Andrew. Though the dress designer is yet unknown, the subtle metallic hues perfectly complement her glowing complexion.
Photo: © Getty Images

The Duchess of Cambridge looked wonderful in a flowing mint-green Alexander McQueen dress for the event, keeping her auburn locks styled in her trademark waves. She paired the dress with cream pumps, carrying a satin clutch that perfectly matched the colour of her gown.
Photo: © Dominic Lipinski / POOL / AFP

Kate chatted with guests at the reception. Her beauty look was absolutely perfect for the day, with her natural beauty shining through a swipe of coral blush and a subtle pink lip.
Photo: © Dominic Lipinski - WPA Pool/Getty Images

Prince Harry and Meghan spoke with British army veteran and charity campaigner Simon Weston and Britain's Wales Secretary Alun Cairns during during the event.
Photo: © DOMINIC LIPINSKI/AFP/Getty Images

While talking with the two, Prince Harry lovingly put his arm around his pregnant wife. They must be overjoyed to be welcoming Baby Sussex so soon!
Photo: © Dominic Lipinski - WPA Pool/Getty Images

Queen Elizabeth welcomed British Prime Minister Theresa May to the reception. They both dazzled in purple!
Photo: © Dominic Lipinski - WPA Pool/Getty Images

Meghan sweetly cupped her blossoming baby bump while standing with her husband, Prince Harry.
Photo: © Getty Images