Stewart Parvin, the longtime couturier who dressed Queen Elizabeth II for more than two decades, once revealed that he adds small weights into hemlines to prevent garments from flying up. He sometimes uses pea-sized lead weights or a short chain inside chiffon fabrics. Members of the royal family also wear anti-static slips and bodysuits to avoid embarrassing wardrobe issues.
Despite such preparations, the wind has caused problems for Catherine before. She previously struggled with a yellow Jenny Packham dress during a 2011 stop at Calgary Airport and later faced similar trouble with a fuchsia Alexander McQueen dress at Princess Eugenie's 2018 wedding.