Here, we look at the duchess' love of jewellery and how she wears traditional pieces so simply and modernly.

The duchess' most famous piece of jewellery, Princess Diana's sapphire and diamond engagement ring, symbolises William's love for his mother.

A wonderful heirloom piece to add to one's collection is an unheated sapphire surrounded by a slew of round diamonds.

Even Kate Middleton enjoys wearing a basic, universally flattering pair of twisted gold hoops.

People say that these $20 earrings from Asos are the same ones that Kate Middleton likes to wear. Who doesn't like a good deal, especially one that the Duchess of Cambridge likes?

Catherine wore a beautiful Jenny Packham gown with a cape to the State Dinner at Buckingham Palace.

Catherine looked polished with a fitted blazer and diamond drop earrings. The jacket's clean lines contrast with the circular earrings.

The Duchess of Cambridge looks chic in a tartan-belted trench coat and emerald green shoes. Her sapphire and diamond earrings show when her hair is pulled back.