"Boss Baby"

Prince Louis (6) once again the secret star of the parade

Princess Kate waits with her children for the carriage for the "Trooping The Color" parade - Prince Louis leans casually against the wall.(Bild: Krone KREATIV/Kensington Palast)

Princess Kate touched hearts on Saturday with her first public appearance since her cancer. Nevertheless, her youngest son Prince Louis once again proved to be the secret star of the royals and lived up to his nickname "Boss Baby" at his grandfather King Charles' "Trooping The Color" parade. 

Even before the departure, Louis proved that he is the "coolest" of the three Wales siblings.

A video released by Kensington Palace shows Princess Kate getting ready with Prince George, Princess Charlotte and Prince Louis outside Buckingham Palace for their departure in the carriage for the parade.

While Kate lovingly strokes Charlotte's hair as she walks back and forth a little nervously, Louis leans casually in his shorts at the entrance. Ready to cause at least a little commotion.

You can watch the video here:

Quickly boring
But Louis was still quiet then, it has to be said. Because as he watched the parade with thousands of marching soldiers from a window with his family, he quickly became bored.

A video shows him yawning vigorously and slowly becoming out of shape. Even playing around with the curtains doesn't help much:

Trouble with Charlotte
When he danced along to a Scots Guards march - which is exactly what his many fans expected of him - he incurred the wrath of his older sister Charlotte. According to lip reader Nicola Hickling, Charlotte reportedly reprimanded him severely while Louis was dancing.

"You've got to stop doing that. Watch the parade," she scolded him, to which Louis replied, "I won't." Charlotte then reportedly said to him: "Do as you're told," and Louis cheekily declared: "No."