The many moods of Prince Louis during Trooping the Colour

As the annual Trooping the Colour parade kicked off the Queen Elizabeth II' Platinum Jubilee celebrations, the royal family members came together on the balcony of the Buckingham Palace. However, it was Prince Louis, the 4-year-old son of Prince William and Kate Middleton, who stole the show with his adorable and humorous antics. (Source: Reuters)

The young royal covered his ears during the noisy fly-past. (Source: Reuters)

Prince Louis made a slew of funny faces during the ceremony. (Source: AP)

From bored and irritated to excited and curious, Prince Louis was a complete mood at Trooping the Color. (Source: Reuters)

Prince George, left, Prince Louis, second left, and Princess Charlotte, third left, watch the Trooping of the Color. (Source: AP)

Prince Louis reacts as he appears on the balcony of Buckingham Palace. (Source: Reuters)

Prince Louis could be seen excitedly pointing at the fly-past. (Source Reuters)

The three siblings were the youngest royals to participate this year after the Queen announced last month that only working members of the royal family and some of their children would appear on the Buckingham Palace balcony. (Source: Reuters)

This was only the second time Prince Louis appeared on the famous balcony. (Source: Reuters)

Kate Middleton happily looks on as Prince Louis points towards the fly-past. (Source: Reuters)