The Queen made an unforgettable entrance at the annual Trooping the Colour ceremony, trading her usual pastel suits for a show-stopping bold green outfit. Her Majesty paired her vibrant Stewart Parvin coat and dress with a hat by Rachel Trevor, and the surprising ensemble made her instantly recognizable to the huge crowd of well-wishers who had gathered to celebrate her 90th birthday.
The Queen, who is attending her 65th Trooping the Colour, accessorized her look with a matching green umbrella and pink flowers in her hat, along with a Brigade of Guards brooch.
According to the monarch's daughter-in-law, Sophie, Countess of Wessex, the Queen chooses bold colours intentionally so her subjects can spot her from far away. Speaking about her for the Our Queen at 90 documentary, she said: "She needs to stand out for people to be able to say 'I saw the queen.'
"Don't forget that when she turns up somewhere, the crowds are two, three, four, 10, 15 deep, and someone wants to be able to say they saw a bit of the queen's hat as she went past."
The Queen's biographer Robert Hardman has also spoken about the Queen's bright outfits, telling BBC Radio 4's Today: "She is engagingly modest. My favourite remark she ever said was 'I can never wear beige because nobody will know who I am.'"
The Queen was joined in the Queen's Carriage by husband Prince Phillipas they travelled from their Buckingham Palace home for her official 90th birthday celebrations.
The couple followed after the Duchess of Cornwall, the Duchess of Cambridge and Prince Harry, who rode in the Barouche carriage, as well as Prince Andrew with Princess Beatrice and Princess Eugenie along with the Earl and Countess of Wessex with their two children, Lady Louise Windsor and James, Viscount Severn.