It's no surprise that royal ladies have a special place in their hearts for tiaras. Encrusted with hundreds of diamonds, the dazzling headpieces reflect lightonto the wearer's face, illuminating their features and making eyes sparkle. Painstakingly crafted by the world's most talented jewellers these diadems are worth huge sums and Elizabeth Taylors fetched a jaw-dropping $4.2 million at auction in 2011.

Traditionally, royal brides would wear a tiara from their own family's collection on their wedding day and then wear ones owned by her husband's family once married. Princess Diana  wore one of her family's tiaras on her wedding day in 1981. The headpiece itself was made out of several separate pieces, the central piece was given to Diana's grandmother for her wedding and the end pieces originally belonged to the last Viscountess of Montagu's tiara. 

Breaking tradition, Duchess Catherine looked absolutely stunning when she married Prince William in a tiara belonging to the Queen. The piece boasts almost one thousand diamonds and was created by Cartier in 1936. 

Duchess Meghan also borrowed one of the Queen's tiaras for her big day. She looked beautiful in a filigree tiara with a large central diamond that had originally been mad for Queen Mary, Princess of Teck.  

Sadly, royal family members cannot wear tiaras whenever they feel like it. Even though both Beatrice and Eugenie are princesses, they are both forbidden from wearing tiaras. However, Princess Eugenie will soon be allowed to, as tradition dictates that only brides or married women are allowed to wear them, as the elaborate headpieces symbolise the crowning of love and a loss of innocence.

And, even when Eugenie finally does become a member of the "tiara club", she still can't dazzle whenever she fells like it, as tiaras may only be worn after six in the evening!