Diana's nieces show support for Prince William amid feud with Prince Harry

Kitty, 33, and twins Amelia and Eliza, both 32, are the daughters of Earl Charles Spencer, the younger brother of the late Diana, Princess of Wales.

Prince William, 42, looked suave in a black tuxedo for the awards ceremony, which was hosted at the British Museum.

Eliza and Amelia both wore gorgeous blue gowns from Temperley London, while Lady Kitty was seen arriving in a gorgeous patterned floral dress from Dolce and Gabbana.

Also present at the event were soul singer Beverley Knight, Rag'n'Bone Man and BBC presenter Dean McCollough.

The presence of Diana's nieces at the Centrepoint Awards to support Prince William was significant, given the royal's current rift with Prince Harry.

The Duke of Sussex, 40, is known to be particularly close with his late mother's side of the family amid his feud with King Charles and the Prince of Wales.

For example, Harry stayed at his uncle's house, Earl Charles Spencer, for the funeral of Lord Robert Fellowes in August.

There have also been reports that the Earl has invited the Duke and Duchess of Sussex to Althorp House for Christmas, although these are unconfirmed.

Prince William was also present at the funeral of Lord Robert Fellowes, however, he is understood to have sat apart from Prince Harry during the service.

The Centrepoint Awards celebrate the achievements of young people who have transformed their lives after experiencing homelessness.

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The late Princess Diana was a longtime and passionate supporter of initiatives to end homelessness.

During his speech, the Prince of Wales demanded a movement that creates “systemic change” to end homelessness in the UK.

Speaking at the event, which was hosted by Claudia Winkleman, William said: “I am inspired by the ambition and commitment of all the award winners and nominees this evening. You should all be incredibly proud of yourselves.

“What inspires me the most about the young people here this evening, is that they have not only overcome homelessness to achieve their personal ambitions, but they are also all contributing to the communities in which they live… be that through teaching, fundraising or volunteering."