Only a select few Catholic royal women are granted what’s known as il privilegio del bianco — the privilege of wearing white during papal audiences. Camilla, who is not Catholic, does not have that right.
Currently, only seven women in the world may wear white when meeting the pope: Princess Charlene of Monaco, Queen Mathilde of Belgium, Queen Letizia of Spain, Grand Duchess Maria Teresa of Luxembourg, and Princess Marina of Naples. Two former queens — Queen Sofia of Spain and Queen Paola of Belgium — also retain the privilege.
A Moment of Faith and Diplomacy

Pope Leo was elected following the death of Pope Francis, and this visit is expected to strengthen diplomatic and spiritual ties between the United Kingdom and the Vatican. King Charles, who serves as Supreme Governor of the Church of England, will join the pontiff in prayer — a gesture rich with historical symbolism given the centuries-old division between their churches.
The royal couple’s audience with Pope Leo also coincides with the opening of the Papal Jubilee, a sacred event held once every 25 years. Their participation underscores the ongoing bridge-building between two of the world’s most enduring institutions — the British monarchy and the Catholic Church.