This is different from most royal wedding tiaras.
Most royals will borrow a diadem for the big day from the Queen, like Meghan Markle and Kate Middleton both did.
Sarah Ferguson was the exception who had one commissioned and made completely new.
But Sophie’s, on the other hand, was designed for her using pieces of a previous royal jewel, making it totally unique.
Since her wedding day, Sophie has worn the tiara several times, including at many European royal weddings.