Queen Camilla wore black during her visit to the Vatican to meet Pope Leo, sparking curiosity about the royal dress code.
The reason behind her choice lies in the "privilège du blanc" rule, which dictates that only queens and princesses from Catholic countries are allowed to wear white when visiting the Pope.
The Privilege of the White, or "le privilège du blanc", is a little-known regulation that influences royal attire during Vatican visits.
Author's summary: Queen Camilla followed the "privilège du blanc" rule by wearing black to the Vatican.