Queen Elizabeth II has always been a source of joy to the people around her. The new ITV documentary on Elizabeth titled “Our Queen at Ninety” aired Monday. It was telecast to mark the 90th birthday of the British monarch. The two-hour long film was presented by British duo Ant & Dec.

In the documentary, members of the royal family including Sophie Wessex, Kate Middleton, Princesses Beatrice and Eugenie, Princes William and Harry and Prince Charles and Camila paid tribute to the queen. The 51-year-old royal Sophie, Countess of Wessex, opened up about Elizabeth’s sense of style. She spoke on why the monarch chose bright colors for public engagements.

“Don’t forget that when she turns up somewhere, the crowds are two, three, four, ten, 15 deep, and someone wants to be able to say they saw a bit of the Queen’s hat as she went past. She needs to stand out for people to be able to say ‘I saw the Queen’,” said Sophie, who is married to the queen’s youngest son, Prince Edward. Meanwhile, 26-year-old Eugenie also praised her grandmother’s timeless fashion sense.

The daughter of Prince Andrew who celebrated her 26th birthday said that her friends say that her grandmother is the “best style person there is” and she looked great in her clothes. Eugenie said that her grandmother’s style was “elegant, classic” and very unique to her. She added Elizabeth had a wonderful, happy color to her at all the time.

The youngster said the word “happy” perfectly described the queen. Meanwhile, Prince Harry revealed how continuing his grandmother’s work around the world could be daunting at times. Talking about following his grandmother’s footsteps, he said they were doing just that. Harry gushed about his grandmother and said she has gone places in the last 90 years.

“Our Queen At Ninety” also gave a behind-the-scenes glimpse into Elizabeth’s daily life and her preparation for special occasions. In one scene she inspected tables ahead of the State Dinner for President Xi of China in November. Another clip showed her boarding the Royal Train at Euston Station the night before an out-of-town engagement.

The monarch was shown working on her papers from her daily Red Box. She sat at her desk covered with family photographs including images of her parents and grandchildren Peter Phillips, Prince Harry and Zara Phillips.