The popular Clarence House twitter account will no longer update royal fans after King Charles ascended to the throne.
The page has over a million followers with social media users kept up to date with the former Prince of Wales' activities and charity work with wife Camilla.
But the King will now live in Buckingham Palace with his the Queen Consort.
Because of the move, the official social media account for the House has now been discontinued.
In its bio, the account explains: "This account is no longer being updated. Please follow The @RoyalFamily for updates on His Majesty King Charles III and Her Majesty The Queen Consort."
Charles instantly became King following the death of his mother Queen Elizabeth on Thursday afternoon.
His rule was officially declared on Saturday after a vow to “seek peace, harmony and prosperity” in a passionate speech the night before.
An official proclamation of his reign was read outside St James’s Palace before gun salutes rang out – 62 rounds near Tower Bridge and 41 rounds beside Hyde Park.
Praising Queen Elizabeth, he declared on Friday: “My Mother gave an example of lifelong love and of selfless service.
“My mother’s reign was unequalled in its duration, its dedication and its devotion. Even as we grieve, we give thanks for this most faithful life.”
He paid his emotional tribute in front of the Queen Consort, Camilla, the new Prince of Wales, William, and more than 200 privy counsellors – including six former prime ministers and the new PM Liz Truss.
Then, in a change to convention instigated by Charles, TV cameras gave the first glimpse of a centuries-old ceremony.
He said: “I know how deeply you, the entire nation – the whole world – sympathise in the irreparable loss we have all suffered.
"It is the greatest consolation to know of the sympathy expressed by so many to my sister and brothers and that such overwhelming affection and support should be extended to our whole family.”
He also approved the day of the Queen's funeral, Monday, 19 September - announcing a bank holiday.
At a historic and sombre meeting of the Accession Council at St James’s Palace in London, he pledged his life to service before signing a declaration “Charles R”, the mark of the sovereign.
Praising Queen Elizabeth, he declared: “My Mother gave an example of lifelong love and of selfless service.
“My mother’s reign was unequalled in its duration, its dedication and its devotion. Even as we grieve, we give thanks for this most faithful life.”
