Queen Elizabeth looks very stern in public, especially when she’s performing her royal duties. But she’s the sweetest grandmother in the eyes of her grandchildren.

Growing up, the Queen would spend time with her grandchildren in Balmoral, and they would also spend time riding their horses. In one of the clips featured in the documentary “Elizabeth R,” Her Majesty is walking outside the castle with her grandchildren.

Princess Anne’s son, Peter Phillips, is riding his horse, and Peter doesn’t need any assistance from the monarch as he was already old enough. Phillips is the eldest grandchild of the Queen and Prince Philip, and he’s the son of Princess Anne.

Zara Phillips, Prince William, Prince Harry, Princess Beatrice and Princess Eugenie are also with their grandmother. An adorable-looking Princess Beatrice asks the Queen if she can ride a bigger horse just like her cousin, and the Queen says that she will be able to do so once she’s older.

At first, Her Majesty’s answer didn’t satisfy Princess Beatrice. But after the monarch distracted her by talking to her pony, Smokey, Princess Beatrice felt so much better.

The Queen shares a special bond with her grandchildren. Throughout the years, they have said nothing but wonderful things about her. Prince William previously revealed that he has witnessed some royal fans faint at the sight of the Queen. Lucky for him, he didn’t experience the fainting spells because he grew up with the monarch.

“Growing up, having this figurehead, having this stability above me has been incredible,” he said. “I have been able to explore, understand, slightly carve my own path. I greatly appreciate and value that protection,” he added.

Prince Harry also praised his grandmother for everything that she has done considering her delicate age. The Duke of Sussex also said that he has been asking the Queen what her secret is, but she never gave him an answer.

During her appearance on “Our Queen At 90,” Princess Eugenie also gushed over her grandmother. She said that the Queen loves Balmoral because this is where she is at her happiest.

Queen Elizabeth Queen Elizabeth II smiles as she arrives before the Opening of the Flanders' Fields Memorial Garden at Wellington Barracks on November 6, 2014, in London, England. WPA Pool /Getty Images