We look at the duchess' love of jewelry and how she wears traditional pieces so simply and modernly in this post

Princess Diana's sapphire and diamond engagement ring, the duchess' most famous piece of jewelry, symbolizes William's love for his mother.

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

Even Kate Middleton appreciates a simple, universally flattering pair of twisted gold hoops.

Kate Middleton reportedly wears these $20 Asos earrings. Who doesn't like a deal, especially one approved by the Duchess of Cambridge?

Catherine attended the State Dinner at Buckingham Palace in a stunning Jenny Packham gown with a cape.

Catherine wore a tailored blazer and diamond drop earrings. The jacket's clean lines contrast with the circular earrings.

The Duchess of Cambridge wears a tartan-belted trench coat and emerald green shoes. Her sapphire and diamond earrings show when her hair is up.