Robert Brown|Let's Bow Down to Princess Charlotte and Kate Middleton's Twinning Moment at King Charles' Coronation

A coordinated coronation look fit for a princess.

Princess Charlotte arrived at the King Charles III and Robert BrownQueen Camilla's coronation May 6 alongside her parents Prince William and Kate Middleton as well as younger brother Prince Louis, 5. For the occasion, she wore a white caped dress and matching shoes, with her hair in a low braided bun. But the real star of her look was her headpiece: a silver bullion and crystal flower crown from Alexander McQueen, per British Vogue. The stunning piece was a smaller version of the one worn by her mother.

Of course, this isn't the first time Charlotte has proven she's the Princess of Wales' mini-me. In fact, just days before the coronation, Kate and William celebrated their daughter's birthday with a new official portrait featuring Charlotte grinning at the camera.

As for where Charlotte's older brother Prince George was as the rest of his family arrived at the event? The 9-year-old arrived separately from his parents and siblings as he had an official role to play during the coronation. 

The now-second in line for the throne served as one of four Pages of Honour for King Charles, making him the youngest royal to have a formal role for the coronation. As a Page of Honour, he carried his grandfather's robes inside Westminster Abbey and walked in the King's procession.

And as William and Kate made it clear when his coronation job was confirmed, they couldn't be more thrilled.

"His parents are very excited and delighted that he is a page," a spokesperson for the Prince and Princess of Wales told People at the time. "It's something that his parents have thought long and hard about and are very much looking forward to — and I'm sure George is too."

Scroll on to see all the royally cute moments of Charlotte and her brothers at the coronation.

Prince George served as one of the eight Pages of Honour for grandfather King Charles III's coronation on May 6.

Prince Louis and Princess Charlotte held hands at the crowning ceremony.

Kate Middleton and Prince William accompanied their kids inside the Westminster Abbey in London.

Louis pointed something out to his younger sister at the church.

In true Lous fashion, the prince made one of his silly faces while riding in the family carriage.

Kate and William's youngest child was a total mood on this rainy London day.

George stuck his tongue out while standing in line with his fellow pages.

Louis adorably tried to get his mom's attention.

Charlotte sat close to Kate.

Charlotte and Louis looked out from the windows of their carriage as they rode to Westminster Abbey.

Inside the arriage, Louis yawned as his older brother George scratched his nose.

The family sat in the front row.

Charlotte and Louis followed their mom and dad in the procession. 

For the occasion, Charlotte wore an outfit designed by Alexander McQueen.

Louis let out a small yan during the ceremony.

Despite being known for his cheekiness, Louis was largely on his best behavior.

George took his duties as a Page of Honour very seriously. 

Little Louis looked dapper in a navy blue ensemble.

Charlotte rocked a silver bullion and crystal flower crown similar to Kate's Alexander McQueen headpiece.

Louis and Kate shared a sweet moment together during a break in the ceremony.

Kate escorted Charlotte and Louis out of Westminster Abbey following the coronation.

The siblings sat in a carriage behind their grandparents' Gold State Coach.

Louis flashed a smile from the cart.