Princess Eugenie wore the stunning Greville Emerald Kokoshinik, which may well be the most expensive wedding tiara ever worn.
The Russian-inspired style is worth a huge £10million.
Made by Boucheron in 1919, this diadem was, like a notable number of pieces in the Royal Family’s possession, originally owned by Dame Margaret Greville.
Mrs Greville, a close friend of Queen Mary & the Queen Mother, Elizabeth, left her jewellery collection to the latter on her death. When the Queen Mother died in 2002, it went to the Queen.