For the last day of her state visit to the UK,  which included an official farewell to The Queen and Prince Phillip at Buckingham Palace followed by a tour of the Francis Crick Institute, Letizia wore an ivory prom-style skirt by one of the UK's best-loved high street labels, Topshop. [...] Diplomatic dressing is a favored sartorial tactic of many of the world's most high-profile women, who use their style choices to pay tribute to the places and countries they visit.