Candid photos show the royal family and celebrities at King Charles' coronation

• The coronation of King Charles III was held on Saturday.
• Photos captured candid moments from the historic day.
• At one point during the service at Westminster Abbey, Prince Louis, 5, was spotted yawning.

King Charles III and Queen Camilla were crowned at their coronation ceremony at Westminster Abbey in London on Saturday.

The historic event was attended by more than 2,200 people, including members of the British royal family, international royals, politicians, celebrities, and friends of the couple. 

The event was televised across the world. And although it was a formal ceremony, there were plenty of candid moments captured on the day — from Prince Louis yawning to Katy Perry snapping a selfie.

Before the coronation service began at Westminster Abbey, there was plenty of standing around. Prince George, 9, was photographed sticking out his tongue ahead of the historic event.

Prince Harry, seated two rows behind the senior royals, was spotted looking over at his elder brother before the start of the ceremony.

Despite attending the event alone, Prince Harry was all smiles as he chatted with his aunt, Princess Anne.

Harry seemed mostly relaxed at the coronation, though he made a few awkward facial expressions.

The king's 5-year-old grandson, Prince Louis, appeared bored and yawned during the ceremony.

Read more: 5-year-old Prince Louis looked as bored at King Charles' coronation as his grandfather had when Queen Elizabeth was crowned

Princess Charlotte seemed a little more engaged. Turning to her mother, she pointed to something written in the ceremony's program.

Celebrity guests, including Katy Perry, appeared unaware that she was being photographed while taking selfies.

Lionel Richie also took selfies with guests before the ceremony began.

During the coronation ceremony, King Charles and Queen Camilla looked serious as they waited to be crowned.

After the ceremony, the king and queen shared a few private words as they traveled by carriage to Buckingham Palace.

Prince William and Kate Middleton were also photographed having a conversation as they traveled to the palace. One day, the couple is expected to have their own coronation.

Prince George and Princess Charlotte could be seen inside a carriage of their own.

Prince Louis smiled as he was seated in the carriage by his siblings, Prince George and Princess Charlotte, while it drove past the crowds.

At another point on the carriage ride, Louis was photographed with a glum expression.

At Buckingham Palace, King Charles offered a soft smile while wearing the St Edward's Crown — the same crown Queen Elizabeth wore 70 years ago.

King Charles and Queen Camilla waved to well-wishers from the Buckingham Palace balcony.

Other members of the royal family, including Prince William and Kate Middleton, also appeared on the balcony. The royals seemed to have mixed reactions to the flyover above them.

Kate Middleton and Prince William exchanged a loving glance on the balcony.

Prince Louis had a particularly animated reaction to the planes flying overhead.

Prince George was spotted grinning with his fellow pages of honor — Oliver Cholmondeley, Nicholas Barclay, and Ralph Tollemache — who assisted Charles during the ceremony.

Page of honor Ralph Tollemache was seen speaking with the king and pointing at the Royal Air Force fly-past.

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