The Princess of Wales dazzled as she made her debut in Queen Victoria's Oriental Circlet tiara at the German state banquet on Wednesday night, but the sparkling headpiece, which was designed by Prince Albert in 1853, has a strict rule surrounding who gets to wear it.

According to the Court Jeweller , Queen Victoria stipulated in her will that only future Queens and Queens Consorts would be permitted to wear the tiara, and the next wearer was her daughter-in-law, Queen Alexandra.

The Queen Consort, who was married to Queen Victoria's eldest son, Edward VII, altered the jewels, replacing the original opals with rubies, as she believed opals to be bad luck. The tiara's next wearer was Queen Mary of Teck, the wife of King George V, although there are no images of Alexandra or Mary w

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