The christening of Prince Harry and Meghan Markle's daughter, Lilibet, had been attended by two of their royal relatives.

Sisters of Harry's mother, Princess Diana, were among the around 30 guests at Lilibet's christening in their Montecito home on March 3, Marie Claire reported.

Prince Harry and Prince William have reportedly remained close with their aunts and uncle on their mother's side of the family since Diana's death in a car accident in 1997.

Lady Jane Fellowes and Lady Sarah McCorquodale reportedly extended their presence in Lilibet's life when they visited the Sussexes in their home during the young princess' christening.

Princess Diana has two older sisters and a younger brother, Earl. The princess was the third of four siblings. On the other hand, senior members of the royal family were unable to attend the event, such as King Charles III, and Prince William.

In 2018, Lady Jane delivered an emotional reading from the Song of Solomon at Harry and Markle's wedding.

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Prince Harry, Meghan Markle's Daughter Lilibet's Christening

Princess Lilibet Diana was christened in an intimate ceremony at their home in Montecito, California, despite earlier reports that she would be brought to the United Kingdom to be baptized.

Unlike his sister, Prince Archie has been christened in the expansive surroundings of Windsor Castle in the United Kingdom, The Mirror reported.

A spokesperson for the Sussexes confirmed to PEOPLE that Lilibet was christened by Rev. John Taylor, the bishop of the Episcopal Diocese of Los Angeles.

The guests were reportedly kept at around 20 to 30 people. Sources claimed that Queen Camilla and Kate Middleton were also invited to the service with King Charles III and Prince William.

According to reports, Charles and William declined the invitation extended to them. When asked, Buckingham Palace refused to confirm the reporting, saying it was a private family matter.

An insider noted that Charles and William attending Lilibet's christening would have been a "massive operation" when it comes to security and planning.

In addition, it would also require at least two flights as Charles and William cannot fly together under the rule for royal travel.

Royal Family Rift

Multiple royal experts told Fox News that they were not surprised that Princess Diana's sisters were present at the christening of the youngest child of Prince Harry and Meghan Markle.

The author of "The King," Christopher Andersen, said he thinks there was a "genuine, heartfelt desire on the part of the Spencers" for Princess Diana's legacy to remain.

He added that the sisters were also "filling the void left by the royal family," who chose not to attend.

Andersen went on to say that the Spencers' attendance could be sending a "none-to-subtle message," which is that Harry, Markle, and their children will always "have Diana's family in their corner" even if the royal family chose to turn away from Harry and Markle.

The royal expert and author noted that Lady Sarah and Lady Jane have acted as proxies for Diana, noting that they attended Lilibet's christening as she could not be there. Lilibet will turn two in June.

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Written by: Mary Webber

WATCH: Princess Lilibet Diana Christened at Home in California - From The Independent