Biggest moments from the coronation: King Charles and Camilla crowned, Prince Harry arrives

King Charles III has officially been crowned after taking oath as the British monarch during coronation. His wife, Queen Consort Camilla, was also crowned at the coronation.

The ceremony Saturday marked a formal confirmation of the role as head of state for Charles, who has been monarch from the moment his mother, Queen Elizabeth II, died on Sept. 8, 2022.

The coronation saw the expected pomp and circumstance from fancy crowns to elaborate wardrobes, celebrity appearances from Lionel Richie and Katy Perry, Prince William kneeling before his father, Prince William and Princess Kate's children participating in the service and the return of Prince Harry.

Keep reading for the biggest moments of the coronation, from Buckingham Palace and Westminster Abbey to the procession back and forth.

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King Charles III and Queen Camilla wave from The Buckingham Palace balcony after the coronation on May 6.
King Charles III and Queen Camilla wave from The Buckingham Palace balcony after the coronation on May 6.

Royal family appear on Buckingham Palace balcony – without Prince Harry

It's a time-honored tradition for the British royals: the balcony appearance to greet the populace – think coronations, royal weddings, jubilees. Thousands gathered, pressing as close as possible to see Buckingham Palace. The anticipated appearance is often gleeful, but one question cast a shadow over the approaching moment: whether Harry would join his family members despite stepping back from royal duties.

The royal couple walked out together to a roar of cheers, leading out their attendants and pages. Other members of the royal family, including the working royals such as Princess Anne, the Prince and Princess of Wales, their children, and cousins of the king, appeared as the rain poured down. Prince Harry and Prince Andrew were not included in the balcony moment.

The moment included a flyover.

Britain's King Charles III and Queen Camilla wave to the crowds from the balcony of Buckingham Palace after their coronation ceremony, in London, Saturday, May 6, 2023.
Britain's King Charles III and Queen Camilla wave to the crowds from the balcony of Buckingham Palace after their coronation ceremony, in London, Saturday, May 6, 2023.

King Charles, royal family (not Harry) together on Buckingham Palace balcony: See the photos

King Charles III crowned as Britain's monarch

Charles was crowned with St. Edward's crown. Charles' mother, Queen Elizabeth, wore the same crown at her 1953 coronation.

"Stand firm, and hold fast from henceforth this seat of royal dignity, which is yours by the authority of Almighty God. May that same God, whose throne endures forever, establish your throne in righteousness, that it may stand fast for evermore," the Archbishop of Canterbury Justin Welby says as he placed the crown on Charles' head.

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King Charles III was crowned during coronation on May 6.
King Charles III was crowned during coronation on May 6.

Camilla crowned as queen consort

Camilla was coronated in a shorter and simpler ceremony following Charles' crowning. Camilla was crowned with Queen Mary's crown, marking the first time an existing crown was used for the queen consort's coronation.

"May thy servant Camilla, who wears this crown, be filled by thine abundant grace and with all princely virtues; reign in her heart, O King of love, that, being certain of thy protection, she may be crowned with thy gracious favor; through Jesus Christ our Lord. Amen," the Archbishop of Canterbury said as he placed the crown on Camilla's head.

Queen Consort Camilla was crowned alongside King Charles III at coronation on May 6.
Queen Consort Camilla was crowned alongside King Charles III at coronation on May 6.

Queen Camilla looks regal as she is crowned at King Charles III coronation: See photos

Prince Harry, Prince William sat separately at coronation

As much as the coronation of Charles is about, well, the king, much of the interest was focused on his sons, William and Harry, as the two brothers reunite.

The past few years have brought to light publicly the complicated relationship between the next heir to the British throne and his younger brother, referred to as the Spare in the palace growing up, as Harry recounted in his tell-all memoir earlier this year.

Harry arrived at Westminster Abbey with his cousins, Princess Eugenie and Princess Beatrice along with their husbands, Jack Brooksbank and Edoardo Mapelli Mozzi, respectively. William arrived a few minutes later with Kate and their children, Prince George, 9, Princess Charlotte, 8, and Prince Louis, 5.

Harry sat in a row behind William's, on the opposite end.

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Prince Harry sat in the pew behind Prince William's, on the opposite end.
Prince Harry sat in the pew behind Prince William's, on the opposite end.

Prince William knelt before Charles and swore his loyalty

The Prince of Wales, who is first in line to the British throne, swore his loyalty to Charles in a ceremony known as "The Homage of Royal Blood."

William kneeled before his father, placing his hands in between Charles' hands as he said, "I, William, Prince of Wales, pledge my loyalty to you and faith and truth I will bear unto you, as your liege man of life and limb. So help me God."

The ceremonious vow took place shortly after Charles' crowning and "The Homage of The Church of England," which was carried out by the Archbishop of Canterbury.

Britain's Prince William kisses his father, King Charles III, during his coronation ceremony in Westminster Abbey, London, Saturday, May 6, 2023.
Britain's Prince William kisses his father, King Charles III, during his coronation ceremony in Westminster Abbey, London, Saturday, May 6, 2023.

Prince George held Charles' robe as a Page of Honor

William and Kate's oldest son, 9-year-old George served as one of King Charles' Pages of Honor. Carrying one corner of Charles' gilded robe, he walked in the procession with the king and queen consort into Westminster Abbey at the outset of the ceremony and stood behind the King during important moments inside the church.

Prince George wore red ceremonial garments signifying his official duties.

Prince George held part of King Charles III's robe as a Page of Honor.
Prince George held part of King Charles III's robe as a Page of Honor.

Royal grandchildren on coronation day: See Prince George, Princess Charlotte, Prince Louis

The king's grandchildren stole the show

Their grandfather was the star of the show, but it didn't take much for the royal kids to steal the spotlight.

During the coronation, all eyes were on his adorable and precocious grandchildren − George, Charlotte, and Louis. Clad in elaborate garments as they sat through the long coronation ceremony, the young Windsors caught the eye of spectators and fans during the historic event.

Charlotte and Louis joined the procession into the Abbey and then took their places in the crowd along with their parents, William and Kate. At one point, Charlotte and Louis were photographed holding hands.

Charlotte wore an Alexander McQueen dress and cape in ivory silk crepe with ivory satin stitch embroidery featuring rose, thistle, daffodil and shamrock motifs, to signify the four nations of the United Kingdom, according to Buckingham Palace. Her sparkly headpiece is by Jess Collett x Alexander McQueen. Louis wore an outfit made by Dege and Skinner, which consists of a Hainsworth garter and blue doeskin tunic with specially designed lace work embellishment to the collar, cuffs and fronts.

Prince Louis and Princess Charlotte arrive for the coronation of King Charles III.
Prince Louis and Princess Charlotte arrive for the coronation of King Charles III.

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Princess Kate and Princess Charlotte matched in Alexander McQueen

The Princess of Wales attended her father-in-law's ascension to the throne in one of her favorite labels, Alexander McQueen.

Catherine, 41, arrived at Westminster Abbey Saturday in an ivory silk crepe dress embroidered at the hem with rose, thistle, daffodil and shamrock motifs (referencing the four nations of the United Kingdom). The McQueen dress, which the princess paired with white stiletto pumps, peeked out beneath her blue and red robe, embellished with the Royal Victorian Order Mantle star.

Kate added sparkle to Saturday's look with a show-stopping headpiece featuring three-dimensional leaves made of silver bullion, crystal and silver thread by Jess Collett x Alexander McQueen.

Charlotte matched her mother in McQueen, wearing an ivory dress featuring embroidery with the same motifs.

Princess Kate and Princess Charlotte's matching McQueen moment at the coronation

First lady Jill Biden arrived at the coronation service with granddaughter Finnegan Biden

First lady Dr. Jill Biden arrived Saturday morning wearing a royal blue Ralph Lauren suit dress with a matching bow headpiece. By her side was her granddaughter, Finnegan Biden, who wore yellow head to toe in Markarian.

It was announced in April that Jill Biden would represent the U.S. at Charles' coronation and President Joe Biden would not attend the occasion. No sitting U.S. president has ever attended a British royal coronation.

Joe Biden said in a tweet that "the enduring friendship between the U.S. and the U.K. is a source of strength for both our peoples."

Jill Biden called it an honor to be at Westminster Abbey "on this historic day."

First lady Jill Biden and her granddaughter Finnegan arrive at Westminster Abbey for King Charles III's coronation.
First lady Jill Biden and her granddaughter Finnegan arrive at Westminster Abbey for King Charles III's coronation.

Katy Perry, Lionel Richie, more celebs attended the coronation

The British monarch, crowned Saturday, will celebrate with a star-studded coronation concert Sunday broadcast across BBC's channels.

The news organization announced the long-awaited list of performers, which includes "American Idol" judges Lionel Richie and Katy Perry as well as local British stars. The artists will perform at Windsor Castle.

Katy Perry and British Vogue editor-in-chief Edward Enninful arrive at Westminster Abbey ahead of the coronation of King Charles III and Queen Camilla on May 6, 2023 in London, England.
Katy Perry and British Vogue editor-in-chief Edward Enninful arrive at Westminster Abbey ahead of the coronation of King Charles III and Queen Camilla on May 6, 2023 in London, England.

Perry and Richie were some of the early arrivals Saturday morning for the coronation ceremony. Perry donned a lilac dress and short-sleeved peplum jacket with matching opera gloves and fascinator.

Lionel Richie arrives at Westminster Abbey in central London on May 6, 2023, ahead of the coronations of Britain's King Charles III and Britain's Camilla, Queen Consort.
Lionel Richie arrives at Westminster Abbey in central London on May 6, 2023, ahead of the coronations of Britain's King Charles III and Britain's Camilla, Queen Consort.

Nick Cave, Emma Thompson, Judi Dench and Stephen Fry were among other celebrity attendees at Charles' coronation.

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'Not My King' protestors arrested

Clad in yellow and holding signs proclaiming "Not My King," protestors against the coronation of Charles were arrested in London.

Graham Smith, the chief executive of Republic, a prominent anti-monarchy group in the U.K., was arrested along with five others Saturday while unloading signs reading "Not My King," according to tweets from the group and the Associated Press.

"They're under arrest, end of (story)," a police officer says in a video tweeted by the Alliance of European Republican Movements, an organization advocating for the end of monarchies across Europe. The officer did not say anything further when the videographers attempted to ask why the protestors were being arrested.

Protesters hold up placards reading 'Not My King' in Trafalgar Square, ahead of the coronation of King Charles III and Camilla, the Queen Consort, in London, Saturday, May 6, 2023.
Protesters hold up placards reading 'Not My King' in Trafalgar Square, ahead of the coronation of King Charles III and Camilla, the Queen Consort, in London, Saturday, May 6, 2023.

'Not My King' protestors arrested during coronation of King Charles III

This article originally appeared on USA TODAY: What happened at the coronation? Biggest moments from King Charles III