As it turns out, her love of rainbow shades isn't just a personal preference. According to her daughter-in-law Sophie, Countess of Wessex, the queen sports the bright hues to ensure that members of the public stand a chance of seeing her through the crowds. "She needs to stand out for people to be able to say 'I saw the queen'," Sophie explained in the documentary The Queen at 90. "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."