: “They (William and Harry) have been in contact but, to put it mildly, the situation remains incredibly strained.
“The ceremony should be and will ultimately signify a coming together for the right reasons.
“This commemoration has been a long term project for both William and Harry and both of them are adult enough to put any feelings to one side to ensure the day goes off without a hitch.
“Certain things don’t need to be said, it’s an unspoken agreement to do what is right in that moment, just as they have said before, this is about their mother’s life and celebrating her legacy.”
Prince Harry returned to the UK this week for the memorial which will see a statue of Princess Diana unveiled on what would have been her 60th birthday.
His wife Meghan Markle has remained in the US with the couple's newborn daughter Lilibet.
The Duke of Sussex spent five days in isolation - seen for the first time on Thursday as he attended a charity event where he gushed over his kids.
The memorial will be revealed tomorrow - on what would have been Diana's 60th birthday Credit: Getty Harry and Meghan during their bombshell interview with Oprah Winfrey Credit: Reuters Prince Harry chats with Ed Sheeran and Anne-Marie at the event Credit: � Thousand Word Media Ltd Prince Harry met with families on Wednesday at Kew Gardens, in London Credit: � Thousand Word Media Ltd His attendance at the charity bash comes just hours ahead of his reunion with Prince William The brothers will make separate speeches Credit: Getty Images - Getty Prince William was also seen out and about this week, heading to Wembley with wife Kate Middleton and their son Prince George to see England beat Germany 2-0.
But the brothers will finally stand shoulder to shoulder at the quiet service for their mother.
It comes after months of speculation of a rift between the brothers following Prince Harry and Meghan Markle quitting the Firm and moving to the US.
The couple claimed they had faced racism within the Royal Family in an explosive chat with Oprah - also claiming the Duchess of Sussex was not given support as she struggled with her mental health.
A day after the interview was aired, Prince William hit back at the racism claims - saying the family was "very much not racist".
He was also reportedly frustrated and angry after Meghan hit out at his wife Kate in the interview.
But now there are hopes the statue unveiling will help to get the brothers talking again.
A source close to the Spencer family said: “It is very much hoped that this celebration of Diana’s legacy will bring Princes William and Harry together again.”
The feuding brothers are set to sit down behind closed doors on Thursday after the unveiling of the mum Princess Diana's statue at Kensington Gardens.
Members of the Spencer family will attend the event, including Diana's brother Earl Spencer and her sisters Lady Sarah McCorquodale and Lady Jane Fellows.
A royal expert has since said Harry's charming personality was back as he returned to royal engagements.
He joked with attendees at the WellChild event, telling guests about his growing family.
When asked by Ed Sheeran, “How do you manage with two?” Harry replied: “Two is definitely a juggle.”
Speaking to another guest, Harry was heard saying: “We've been lucky so far, she's very chilled and seems happy to just sit there while Archie is running around like crazy.”
The event, which celebrates inspirational young people living with serious illnesses and those who go the extra mile while caring for them, was originally scheduled for September.
Princess Diana would have been 60 years old tomorrow Credit: Getty - Contributor Prince Harry was the surprise guest at the WellChild Awards this afternoon
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