Popsugar Celebrity The Royals William, Kate, Harry, and Meghan Pictures March 2019 William, Kate, Harry, and Meghan Reunite to Celebrate Their "Pa", Prince Charles 5 March 2019 by Gemma Cartwright Image Source: Getty / WPA Pool The British royal family arrived at Buckingham Palace on March 5 for a very special celebration in honour of Prince Charles. It's been 50 years since the prince's investiture, when he formally became the Prince of Wales, and he was surrounded by his closest relatives at a special morning reception that marked the important anniversary. Queen Elizabeth, Princess Anne, and Camilla, Duchess of Cornwall, were all in attendance, but for many royal fans, the big reason to get excited was the chance to see William, Kate, Harry, and Meghan, aka the royal "Fab Four," back together. Related: 8 Times Harry, Meghan, William, and Kate Proved They Were the Best Members of the Royal Family The Duke and Duchess of Cambridge and the Duke and Duchess of Sussex have been busy in their royal roles recently, not to mention with their growing families. After splitting their offices to manage the workload and their differing roles within the senior royal family, they've embarked on far more solo engagements than they have as a group. However, they all came together to celebrate Charles's continued service to Wales, the UK, and the Commonwealth. See photos from this momentous family occasion ahead, and stay tuned for more. Image Source: Getty / WPA Pool 1 / 32 Image Source: Getty / WPA Pool 2 / 32 Image Source: Getty / WPA Pool 3 / 32 Image Source: Getty / WPA Pool 4 / 32 Image Source: Getty / WPA Pool 5 / 32 Image Source: Getty / WPA Pool 6 / 32 Image Source: Getty / WPA Pool 7 / 32 Image Source: Getty / WPA Pool 8 / 32 Image Source: Getty / WPA Pool 9 / 32 Image Source: Getty / WPA Pool 10 / 32 Image Source: Getty / WPA Pool 11 / 32 Image Source: Getty / WPA Pool 12 / 32 Image Source: Getty / WPA Pool 13 / 32 Image Source: Getty / WPA Pool 14 / 32 Image Source: Getty / WPA Pool 15 / 32 Image Source: Getty / WPA Pool 16 / 32 Image Source: Getty / WPA Pool 17 / 32 Image Source: Getty / WPA Pool 18 / 32 Image Source: Getty / WPA Pool 19 / 32 Image Source: Getty / WPA Pool 20 / 32 Image Source: Getty / WPA Pool 21 / 32 Image Source: Getty / WPA Pool 22 / 32 Image Source: Getty / WPA Pool 23 / 32 Image Source: Getty / WPA Pool 24 / 32 Image Source: Getty / WPA Pool 25 / 32 Image Source: Getty / WPA Pool 26 / 32 Image Source: Getty / WPA Pool 27 / 32 Image Source: Getty / WPA Pool 28 / 32 Image Source: Getty / WPA Pool 29 / 32 Image Source: Getty / WPA Pool 30 / 32 Image Source: Getty / WPA Pool 31 / 32 Image Source: Getty / WPA Pool 32 / 32 The RoyalsMeghan MarkleThe British RoyalsPrince WilliamPrince HarryKing Charles IIIQueen Elizabeth IIKate Middleton