Princess Diana previously shared her sweet nighttime routine with her sons, Prince William and Prince Harry, when they were still very young.

In the documentary “Diana: In Her Own Words,” the Princess of Wales said that she enjoys showering her sons with so much affection especially before they head to bed.

“I hug my children to death. I get in bed with them at night and hug them… I always say, ‘Who loves you most in the whole world?’ and they always say, ‘mommy…’ It’s always that… I always feed them… It’s so important,” she said.

Princess Diana also tried her best to make sure that both of her sons would receive equal amounts of love and attention from her and Prince Charles even though their future roles in the royal family are different.

In fact, the Princess of Wales was heartbroken to see how the other members of the British clan seemed to favor the Duke of Cambridge simply because he’s the future heir to the throne. Prince Harry also noticed that the Queen Mother preferred Prince William over him and he complained about it.

But in her own way, Princess Diana also unknowingly gave Prince William a little bit more attention than Prince Harry because she wanted to prepare him for his future role.

“I am altering [the monarchy] for him [William], but in a subtle way. People aren’t aware of it, but I am… Through William learning what I do and his father to a certain extent… He has got an insight into what’s coming his way… He’s not hidden upstairs with the governess,” she said.

Several years after Princess Diana passed away, Prince William was blessed with three children after he married Kate Middleton. But unlike the Princess of Wales, Prince William and Middleton tried to shield Prince George from the reality that he will also become King one day.

During a previous interview, he said that he will tell his son about his important role when he gets older.

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. Photo: Getty Images/Johnny Eggitt/AFP