Prince William and Prince Harry will reportedly be forced to set aside their differences for the sake of their late mother, Princess Diana.

On Aug. 31, the Princess of Wales will mark her 22nd death anniversary. It is highly likely that the royal siblings will visit their mom’s grave. But as of late, it is still unclear whether or not Prince William and Prince Harry will arrive in Althorp together.

But in the past, it has been reported that the Duke of Cambridge and the Duke of Sussex would usually spend the entire day looking back at some of their fondest memories with the Princess of Wales.

“They talk about the little things about Diana that made them laugh: the ski trips and outings to Thorpe Park [a British amusement park]; the effort she went to on their birthdays all of it,” the source said.

The insider also said that Prince William and Prince Harry would have to come together despite their recent split so that they could discuss how to push the late royal’s charity work.

“They always discuss Diana’s charity work and brainstorm ways they can continue her legacy. They always discuss Diana’s charity work and brainstorm ways they can continue her legacy,” the source said.

But by the looks of it, the upcoming reunion between Prince William and Prince Harry might be quite challenging for the royal siblings. After all, a royal expert recently claimed that the brothers’ relationship has soured.

While speaking with Daily Mail, royal author Penny Junor seemingly placed all of the blame on Meghan Markle’s husband. She said that Prince Harry has changed tremendously within the past year. And as such, he is no longer Prince Harry that the public once knew and loved.

Prince William and Prince Harry also made headlines this month after it was revealed that their split has been made official. The name of the Royal Foundation has been changed.

Princess Diana, Prince William, Prince Harry
Pictured: Princess Diana, Prince Harry, Prince William gather for the commemorations of VJ Day, 19 August 1995, in London. Getty Images/Johnny Eggitt/AFP