In a new BBC documentary, the 10-year-old prince joined his parents and siblings at Westminster Abbey to go through plans for King Charles’s May ceremony.
The fly-on-the-wall doc aired on BBC One on Tuesday (Boxing Day).
Fans also spotted the heartwarming moment an “affectionate” King Charles kisses Prince Louis, 5, after Prince Harry claimed he “never gives hugs.”
During the rehearsal, Charles is seen bending over to hug and kiss Prince George and Prince Louis.
Louis is dressed in a blazer and smart shorts for the rehearsal, while Prince George wears a suit.
The King also embraces Princess Charlotte, 8, who curtsies in homage to him and wears a pale blue patterned dress with a white cardigan.