Kate Middleton's special nod to Princess Diana on Archie's christening day

The Duchess of Cambridge looked glowing in the official family photo released by the Duke and Duchess of Sussex.

Kate Middleton paid a special tribute to her late mother-in-law on baby Archie's christening day.

The Duchess of Cambridge is believed to have been wearing Princess Diana’s Collingwood Pearl Earrings, that she wore to Prince Harry's Christening in 1984.

Contrasted against her long brunette hair, the pearl drop earrings looked stunning in the photo.

Kate looked radiant today in a pink knee-length Stella McCartney dress with a tie detail around the neck.

She teamed her frock with red heels and a red headband, revealing the earrings.

But Kate's jewellery was not the only tribute to Princess Diana in the christening photos released by the Duke and Duchess of Sussex.

Meghan and Harry made sure there were some important and touching nods to Princess Diana in the pictures released today.

The couple chose to include Diana's two sisters - Lady Jane Fellowes and Lady Sarah McCorquodale - in the official family photo.

The two women are standing directly behind Meghan smiling at the camera.

Harry, Meghan and Archie are also sitting on a green bench with gold detailing which also holds a very sweet meaning.

It's the same chair that Diana and the Queen sat on in the official photos from Harry's christening.

Prince Harry sat on the same chair in the couple's official wedding photos, surrounded by the couple's pageboys and bridesmaids.

There is also a single chair that is part of the same set, which Diana sat on in the pictures of her, Charles and Harry on the special day. 

Meghan and Harry earlier released two official pictures from today's private celebration at Windsor Castle, to the delight of fans around the world.