The Duchess of Edinburgh was sombre as she attended the funeral of the Duchess of Kent at Westminster Cathedral on Tuesday.

Sophie, 60, cut a dignified figure in black mourning attire as she arrived at the event to pay her final respects to the late royal.

The mother-of-two, who attended the solemn service without her husband Prince Edward, was seen stepping gracefully from her vehicle at the grand entrance of the Cathedral.

While the funeral service was attended by senior royals, including King Charles, the Prince and Princess of Wales, the Duke and Duchess of York, and The Princess Royal, the Duke of Edinburgh was noticeably absent.

The reason Sophie attended the funeral solo is because Edward, 61, he is currently representing the King on a royal engagement in Papua New Guinea.

Town & Country magazine reported that Edward arrived in the South Pacific island nation on Sunday, ahead of the country's 50th anniversary of its independence from Austalia.

He is expected to remain in Papua New Guinea, one of 15 commonwealth nations where Charles is head of state, until September 17 - meaning Edward will also miss the beginning of US president Donald Trump's two-day State Visit.

Edward and Sophie's two children - Lady Louise Windsor, 21, and James, Earl of Wessex, 17, - were not in attendance at the Duchess of Kent's funeral service in London either.

The Duchess of Edinburgh donned all black as she attended the funeral for the Duchess of Kent at Westminster Cathedral

At 92, Katharine, the wife of the late Queen's cousin, became the oldest member of the royal family following Queen Elizabeth's death in 2022.

Today's requiem mass will also be attended by King Charles, however Queen Camilla will not be attending.

A Palace spokesperson said: 'With great regret, Her Majesty The Queen has withdrawn from attendance at this afternoon's Requiem Mass for The Duchess of Kent as she is recovering from acute sinusitis. Her thoughts and prayers will be with The Duke of Kent and all the family.'

Sophie was abroad, undertaking a four-day visit to Canada, arriving in the North American country the night before news of the Duchess' death was announced.

Sophie was the first member of the royal family to be seen following the sad announcement, attending a pre-arranged engagement to Spruce Meadows, a multi-purpose sports facility near Calgary in Alberta.

She bore a solemn expression as she carried out her duties, and appeared to be wearing mourning attire, dressing in a simple shirtdress from Gabriela Hearst with a black tie around her waist.

Sophie opted for pared-back jewellery, including Adore earrings, and at times shielded her expression behind her brown Stella McCartney sunglasses.

It is believed that members of the royal family will usually carry a black mourning outfit with them whenever they travel in case tragic news breaks while they are abroad.

Sophie, 60, cut a dignified figure in all-black mourning attire, donning a black midi dress and a fascinator hat as she arrived at the Cathedral today to pay her final respects to the late Duchess of Kent

The mother-of-three attended the solemn service without her husband, Prince Edward, and was seen stepping gracefully from her vehicle at the grand entrance of the Cathedral

Sophie observed traditional mourning dress as she joined other members of the Royal Family in paying respects to Katharine, who died peacefully at home, surrounded by her family, on September 4

Sophie also carried a matching black handbag as she stepped out of the car

The rule stems from 1952, when Queen Elizabeth had to wait on her plane after returning from Africa to change into appropriate mourning attire after the death of her father, King George VI.

She had become the first member of the royal family to convert to Catholicism for more than 300 years, doing so in 1994, and it was her wish to have her funeral at Westminster Cathedral, which will be the first Catholic ceremony for a Royal in modern British history.

And in keeping with Roman Catholic tradition, her coffin traveled from Kensington Palace to the cathedral yesterday, for a series of private funeral rites attended by the Duchess's immediate family.

It was led by a military piper from The Royal Dragoon Guards, a regiment the Duchess supported as deputy Colonel-in-Chief since its inception in 1992, for the first few minutes of the journey.

Other service personnel from the regiment formed the bearer party carrying the coffin into the cathedral where it will rest overnight in the Chapel of the Blessed Virgin Mary.

The Duchess of Kent's mourning grandchildren appeared sombre as they attended a the vigil on Monday.

The Duchess's coffin was carried in a royal hearse, designed by Queen Elizabeth, from her home in Kensington to Westminster Cathedral.

Katharine, with her husband, Prince Edward, Duke of Kent, had three children: George Windsor, the Earl of St Andrews, Lady Helen Taylor and Lord Nicholas Windsor.

She was pictured leaving Westminster Cathedral after the memorial service for the Duchess of Kent, who died 'peacefully' while surrounded by her family at Kensington Palace on September 4

The Duchess of Kent's grandchildren, Lady Eloise Taylor and Lady Estella Taylor, are seen arriving at the late royal's funeral

Lady Amelia Windsor and Lady Marina Windsor arrived at Westminster Cathedral ahead of the funeral

King Charles put on a sombre display as he arrived for the Requiem Mass service for the Duchess of Kent

The Duke of Kent pictured arriving for the Requiem Mass service for the Duchess of Kent, at Westminster Cathedral - wit his daughter

Pictured today: A general view of the Requiem Mass service for the Duchess of Kent this afternoon

Pictured: The Duchess of Gloucester arriving for the Requiem Mass service for the Duchess of Kent

Sixty-one-year-old Helen is mother to her four children with husband Timothy Taylor, Columbus Taylor, 31, Cassius Taylor, 28, otherwise known as the 'bad boy royal', Eloise Olivia Katherine Taylor, 22, and Estella Taylor, 20.

Meanwhile, Helen's younger brother Lord Nicholas Windsor, 55, is the father of two sons, Albert Windsor, 17, and Leopold Windsor, 15.

The oldest of Katharine's children, George Windsor, the Earl of St Andrews, has three children: Edward Windsor, 36, Lady Marina Charlotte Windsor, 32, and Lady Amelia Windsor, 30.

Both Amelia and Marina were dressed in black for the vigil, as they paid their respects to their late grandmother.

Lord Nicholas was seen at the back of a minibus which was carrying her grandchildren and the Prince and Princess Michael of Kent. The Prince, 83, is the Duke of Kent's brother.

The Duke of Kent's sister, Princess Alexandra, 88, also arrived by taxi and in a wheelchair. The Duke of Kent is now the oldest living member of the Royal Family following the death of his wife.

After Katharine's passing, several of her grandchildren posted tributes on social media, with Lady Amelia sharing a vintage monochrome photograph of her grandmother, along with a red love heart.

The last Catholic royal was King James II, who reigned from 1685 until he was deposed by his daughter Mary II and her Dutch husband William III of Orange in the Glorious Revolution of 1688.

Catherine was sombre as she honoured the Duchess of Kent's memory at the funeral

Kate, 43, remembered the Duchess, who became the oldest living member of the Royal Family when Queen Elizabeth II died in 2022, alongside other members of the Royal Family today

Wearing all black, the mother-of-two opted for the same dress she had donned for the late Prince Philip 's funeral

Prince Richard, Duke of Gloucester, attended the Duchess of Kent's funeral on Tuesday afternoon

Lord Frederick Windsor and his wife Sophie Winkleman attended the Duchess of Kent's funeral today

The Act of Settlement 1701 banned Catholic monarchs and ensured a Protestant line of succession.

The King will not be the first modern monarch to have attended a Catholic funeral - Queen Elizabeth II went to the Catholic state funeral of King Baudouin of the Belgians, at St Michael's Cathedral in Brussels, in August 1993.

Read More Duchess of Kent funeral plans revealed before first Catholic funeral in modern Royal British history

Charles, when he was Prince of Wales, went to Pope John Paul II's funeral, representing his mother the late Queen, in 2005, while his son William attended Pope Francis's funeral mass earlier this year.

Aside from being the first Catholic funeral in three centuries, Katharine's will be the first royal funeral at the Westminster Cathedral, in Victoria, central London, since its construction in 1903.

The Duchess of Kent was very close to Prince Harry's mother, Princess Diana, and the pair often would often sit together at royal events and Wimbledon.

The two women enjoyed a warm friendship that dated back to her engagement to Harry's father and she later spoke of her grief when Diana died in 1997.

It came as the Prince and Princess of Wales gave a loving tribute to the Duchess, with William and Kate saying she would be 'much missed'.

The future king and queen described how she had 'worked tirelessly' in her life to help others.

The Duke of York and Sarah Ferguson pictured arriving at the Requiem Mass service this afternoon

The Duchess worked tirelessly to help others and supported many causes, including through her love of music. She will be a much missed member of the family'.

Prime Minister Sir Keir Starmer said the Duchess of Kent brought 'compassion, dignity and a human touch to everything she did', as he paid tribute following her death.

It is unlikely there will be any national mourning period as the Duchess had not been a working royal since 2002, although it is expected there will be those who wish to pay tribute.

The wife of the Duke of Kent, cousin of Queen Elizabeth and grandson of King George V was universally admired for her beauty and elegance.

However she was equally renowned for her compassion and dignity, seeking permission from the late Queen to convert to Catholicism and give up full-time royal duties following a series of personal tragedies to work as a music teacher in a Hull primary school.

She also founded a charity, Future Talent, to support some of the country's brightest but under-supported musical prodigies.

Sophie makes solo appearance at Duchess of Kent's funeral service