Elton John and Harry Styles take a moment during their respective concerts to pay tribute to Queen Elizabeth II, who died on Thursday.
The 73-year-old royal addressed the nation following the death of his mother.
The singer has a long history with the royal family.
The 37-year-old grandson of the late monarch appeared to be comforting an airport worker as he boarded the plane.
King Charles makes his debut as the new reigning monarch of England, following the death of his mother, Queen Elizabeth II.
A 1917 law by King George stipulates that the children of the son of a sovereign shall have HRH titles if they so choose.
Several members of the royal family rushed to Scotland upon news of the queen's declining health.
Buckingham Palace made the official announcement on Friday.
Sir Patrick Stewart reacts to Queen Elizabeth II's death and recalls being knighted by her.
Prince William and Kate Middleton have already changed their titles on Instagram.
Celebrities are mourning the loss of Queen Elizabeth II, who died peacefully at Balmoral Castle in Scotland. She was 96.
After Queen Elizabeth's death, royal expert Katie Nicholl explains the new titles the late monarch's family will inherit.
Royal expert Katie Nicholl explains how Queen Elizabeth II's death may affect Prince William and Prince Harry's strained relationship.
Due to health and mobility issues, the 96-year-old British monarch appointed the new prime minister at Balmoral Castle in Scotland.
