Prince George, Princess Charlotte and Prince Louis' Cutest Coronation Moments

Prince George had a special role in Saturday's ceremony, while Princess Charlotte and Prince Louis attended with their mom and dad

On Saturday morning, Princess Charlotte, 8, peeked out of her car en route to Westminster Abbey for the coronation of her grandfather, King Charles III.

Her little brother, Prince Louis, 5, gave a look while making his way inside.

The pair followed their mom and dad, Kate Middleton and Prince William, into the church.

The younger royals made an adorable entry.

The cameras caught their eyes, too!

Charlotte guided Louis into the Abbey.

Inside, Charlotte was sure to hold tight to her little bro's hand.

Charlotte wore a headpiece reflective of her mother's. Instead of a tiara, Kate opted for a Jess Collett x Alexander McQueen headband with silver bullion, crystal and silver thread work three-dimensional leaf embroidery.

The pair sported similar updos, too!

Meanwhile, Prince George had a special role in Saturday's ceremony, as a Page of Honor.

Prince George's coronation participation marks the first time in modern royal history that a future monarch is officially involved in such a service. According to The Telegraph, George becomes the youngest future king to play an official role in a crowning ceremony.

The 9-year-old processed through the Nave of Westminster Abbey during the coronation.

He also held a back corner of his grandfather's robe.

Prince George stepped into the spotlight as one of four Pages of Honor attending to the king, alongside Lord Oliver Cholmondeley, Nicholas Barclay and Ralph Tollemache.

During the ceremony, Charlotte and Louis sat between their mom and dad in the front row.

The young pair sat at attention during the major moments.

Though at one point, Louis couldn't help but yawn!

During the ceremony, Louis pointed something out to his big sister.

And she took her older sibling duties seriously.

Later in the ceremony, Louis left.

Despite that, Charlotte continued her royal duties, singing a hymn toward the end of the ceremony.

Louis returned for the end of the ceremony, watching his newly crowned grandfather leave the Abbey.

After the ceremony, George, Charlotte and Louis took a carriage ride to Buckingham Palace with their parents.

A look at waving Louis!

Charlotte smiled at the people gathered to see the procession.

A smile from Will and another wave from Louis.

Prince Louis looked out through the rain.

Princess Charlotte and Prince George sat still for the ride through London.

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