Actual dates of birth aside, Trooping the Colour is a major event in the royal social calendar.

The public are welcome to watch the parade as well as the soldiers' performance.

Another exciting element of Trooping the Colour for those who don’t live in England is the fashion.

Princess Catherine smiling

Since 2011, the general population has been blessed byPrincess Catherine’s fashionchoices for the event.

Here are all of the Princess of Wales' Trooping the Colour looks over the years.

Princess Catherine stayed busy the entire day.

Princess Catherine in white dress and black fascinator on balcony

In 2012, Catherine wore a custom baby blue Erdem ensemble, replete with a matching fascinator.

Just when it seems things are becoming stagnant for the Windsors, someone does something that revives public interest.

The princess capped her public appearances while pregnant at the 2013 Trooping the Colour.

Princess Catherine smiling in blue dress and fascinator on balcony

For the event, she wore a pale pink Alexander McQueen jacket and a matching hat.

The jacket featured large pearl buttons, which the royal matched with a pair of drop pearl earrings.

In 2014, the duchess wore another striking Alexander McQueen look for Trooping the Colour.

Pregnant Princess Catherine laughing in pink dress and hat

By 2014, Princess Catherine had established somewhat of a uniform for herself for Trooping the Colour.

The outfit he wore coordinated with his mother’s, but its meaning was far deeper than that.

One important aspect of that uniform is a hat.

Princess Catherine smiling in silver-blue dress and hat

Hats are common accessories at many events Catherine attends, especially the more formal events.

“It’s part of the social fabric.

For most people, the hat is quite serious and frivolous at the same time.

Princess Catherine laughing in white hat and blue dress

It completes the outfit and it’s a finishing touch.”

Some of Catherine’s best hat moments have been at Trooping the Colour, like in 2016.

That year, the duchess wore a Philip Treacy hat with a large rose applique underneath the brim.

Princess Catherine smiling in large pink hat

The hat made a major statement, even against her Alexander McQueen ensemble.

However, Princess Catherine does not reserve hats for Trooping the Colour.

“But all that has changed and hats are now reserved for more formal occasions.”

Princess Catherine frowning in pink dress and hat

The royal accessorized with some lovely diamond earrings and carried a cream clutch.

The royal family, though, was determined to carry on.

“Put to the test, the United Kingdom has been resolute in the face of adversity.

Princess Catherine in carriage wearing light blue outfit

Fashion fans were particularly excited to see what Meghan would wear.

“It was also so I could just blend in,” she said.

“I’m not trying to stand out here.

Photo of Princess Catherine wearing pale yellow dress and hat

At the very least, fashionistas could predict what designer she’d wear.

In 2019, the royals took to social media to educate the public about the Trooping the Colour event.

This is the origin of the word ‘trooping.’

Princess Catherine smiling in carriage

Princess Catherine’s absence in 2020 and 2021 made her return in 2022 that much more triumphant.

Furthermore,Princess Catherine paid homage to Princess Diana by wearing her diamond and sapphire earrings.

In December 2022, Catherine became the Irish Guards' honorary colonel.

Princess Catherine on balcony wearing green hat and dress