Princess Eugenie tiara: Why Princess Beatrice wont use the same tiara as her sister

Digital fashion editor at Harper’s Bazaar Amy de Klerk predicts the dress will be “white, sleeved and not too risqué – and she will also probably wear a tiara”.

She added: “It is quite likely Beatrice will choose either a British designer or a British brand for her big day, meaning both Mary Katrantzou and Roksanda could be key contenders.”

For her wedding, likely to take place in 2020, Beatrice will probably choose a headpiece from the Queen’s collections.

Since Eugenie passed on the York tiara, the bride-to-be may choose to wear this headpiece instead.

According to gemologist Grant Mobley, it’s estimated worth is at least $300,000 (£230,226).