Prince William and Prince Harry
Prince William and Prince Harry chose special items from Princess Diana's collection to remember her. Pictured: Prince William and Prince Harry attend the European Premiere of "Star Wars: The Last Jedi" at Royal Albert Hall on Dec. 12, 2017 in London. Getty Images/Eddie Mulholland

Prince William and Prince Harry chose special items from Princess Diana's vault to remember her.

According to James Bickerton of Daily Express, the Duke of Cambridge and Duke of Sussex chose to remember their mom by keeping items from her personal belongings. Prince William reportedly picked the late Princess of Wales' Cartier watch, while Prince Harry opted for Princess Diana's engagement ring.

However, Prince Harry later gave the ring to his older brother. Prince William used the same band when he proposed to Kate Middleton. Princess Diana's engagement ring is now owned by the Duchess of Cambridge.

Aside from those items, Princess Diana left her two sons with a small fortune amounting to around $17,000,000. They received a portion of it when they were 25 and waited until they turned 30 for the full amount. According to the royal advisors, the inheritance had increased to $26,000,000 by the time it was given to the princes.

According to Ken Wharfe, Prince Harry and Prince William had fond memories of their mom. In fact, there was a time when the Duke of Cambridge used Princess Diana to prank the press.

"William said, we can go to the top of the cliff and when mummy does the photo call we can fire the balloons at the press," Wharfe told Robert Jobson's Royal Podcast.

As the press drew near the royal brothers launched water balloons and scored a direct hit on esteemed royal reporter James Whitaker. "It was probably some of the best pictures ever taken of Diana in the Caribbean," Wharfe added.

Prince William and Prince Harry are still grieving for the death of their mother after over two decades. Last year, to commemorate Princess Diana's 20th death anniversary, Prince William admitted that he was still in shock.

"I still have shock within me. You know, 20 years later. People go 'shock can't last that long' but it does," he said in a BBC documentary (via Pop Sugar).

On the other hand, Prince Harry remains indifferent to the media. He blamed the paparazzi who chased Princess Diana for the automobile accident and was disheartened that they did not help their mom immediately.

"She had quite a severe head injury but she was very much still alive on the back seat. And those people that caused the accident, instead of helping, they were taking photographs on the back seat, and then those photographs made their way back to news desks," Prince Harry said.