Buckingham Palace unveils a new portrait of King Charles III's family. 

The first official image of Charles, Camilla, William, and Kate on the Night Before the Queen's Funeral

At Buckingham Palace on Sept. 18, the four royals posed side-by-side in all-black mourning clothes before Queen Elizabeth II's funeral.

The late Queen Elizabeth II's son, Prince Charles, 73, was officially proclaimed the reigning monarch of the United Kingdom on Sept. 10.

One day after the Queen's death on Sept. 8, William and Kate were both made Prince and Princess of Wales by King Charles III.

The clerk to the council read the proclamation to the Privy Council: "The crown of the United Kingdom of Great Britain and Northern Ireland is solely and rightfully come to the Prince Charles Philip Arthur George." 

Three days after Queen Elizabeth's death, a poignant portrait of the new monarch King Charles was released, showing him hard at work in Buckingham Palace.