Princess Kate and Prince William were all smiles as they graced the annual Commonwealth Day service on Monday.

The royal couple, who returned to the iconic Westminster Abbey where they tied the knot, captivated everyone with their stunning appearance.

The ceremony serves as a tribute to the global network of 56 countries that make up the Commonwealth.

Kate looked absolutely smashing in her navy Urdan peplum jacket and skirt adorned with a white embroidered print.

To complete her impeccable ensemble, she donned a wide-brimmed felt hat, an Emmy London clutch, and classic navy suede pointe toe pumps by John Vittorossi.

Adding a touch of sparkle, she wore sapphire and diamond earrings that once belonged to Princess Diana, as well as a Prince of Wales feathers brooch gifted by King Charles.

Prince William, not to be outdone, complimented his wife’s elegance in a navy suit paired with a blue tie.

The couple appeared equally dashing as they attended the service, which pays tribute to the 56 nations and countries comprising the Commonwealth.

In attendance were also King Charles III, Queen Consort Camilla, Prince Edward, Sophie, Princess Anne, and Vice-Admiral Sir Timothy Lawrence.

This marked King Charles’ first time attending the Westminster Abbey service as the head of the Commonwealth Association.

Previously, Queen Elizabeth held this esteemed role until her passing last year.

Sophie, the Duchess of Edinburgh, exuded sophistication in her cream coat, white handbag, and soft pink leather pumps.

The outing came shortly after King Charles bestowed the Dukedom of Edinburgh upon Prince Edward in celebration of his 59th birthday.

The Commonwealth of Nations is a voluntary association consisting of 56 independent sovereign states, most of which were once territories of the British Empire.

With a population of 2.5 billion citizens, it represents approximately one-third of the world’s population.

Commonwealth Day, observed every second Monday in March, is a grand event that features musical performances, speeches, and readings from around the globe.

The ceremony commences with a procession of young flag-bearers representing each of the 56 nations.