She was there when Harry and William first reunited in public at Prince Philip's funeral back in April, and now it seems Kate will again play a crucial role when the brothers are face to face in the UK for the unveiling of a statue in their mother Diana's honour.
The memorial celebrating what would have been Princess Diana's 60th birthday is one of the only things the brothers have worked on together for some time after commissioning the statue in 2017.
Meghan Markle is unlikely to attend as she recently gave birth to Lilibet, her and Harry's second child, so it leaves the duke to again face his family alone, after he made headlines with another series of explosive claims against the royal family, particularly his father Prince Charles.
An insider has claimed the Duchess of Cambridge has agreed to attend the ceremony at Kensington Palace next Thursday and she will reportedly walk alongside both Harry and William.
"The Duchess has seen this project evolve from its conception and now to the finished article and undoubtedly wants to be there to support her husband," the source told the Mirror.
"No doubt there will be tensions between the Cambridges and Harry, but they all recognise that despite the obvious and deep rooted issues between them, they want the day to be solely about the Princess of Wales's enduring legacy."
The statue will be unveiled in the Sunken Garden in Kensington Palace, where Diana lived both during and after her marriage to Prince Charles.
The Kensington Palace website says, "In 2017 the garden was completely re-planted in white flowers for visitors to reflect and celebrate the life of Princess Diana. It took inspiration from Princess Diana’s dresses along with the famous Mario Testino photographs of the Princess."
The garden is currently closed but is usually open, meaning visitors will be able to see the statue.
Kate Middleton ‘trying to end feud’ between William and Harry
Kate Middleton has already been labelled a "brilliant arbiter and peacekeeper" in Harry and William’s royal fallout, and according to her uncle, Gary Goldsmith, she is doing her best to end the rift "before it’s too late".
Goldsmith, who is the younger brother of Kate’s mother Carole, said that Prince Harry "needs to get a grip," in an interview with Closer.
"Everyone is astonished. He wanted to step back and protect his wife, now he’s charging in. It’s an attack on the family – why do it? If you want an easy life, work it out privately and have a conversation respectfully. Don’t air it in public, it’s really hurtful," he continued.
"If anyone can bring peace to the royals, Kate can.
"Every bone in her body is about making friends and doing the best she can... She’s trying to mediate."
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