His antics didn’t stop through the day, with Louis even displaying his cheeky behaviour later on.
Some pictures showed him yawning and playing with a blind cord on the balcony as the family stood and watched the Trooping parade.
Earlier, the young royal was seen waving as he arrived at Buckingham Palace, as he also waved during the RAF flypast.
June 15 marked the first appearance of the year for Princess Kate – who stepped back from duties after being diagnosed with an undisclosed form of cancer earlier this year. Louis, Charlotte and their older brother George also made their first appearance of 2024 on June 15.
Prior to Trooping the Colour, the family had not been seen publicly since Christmas Day.