Princess Beatrice has revealed the name of her first child.

“We are delighted to share that we have named out daughter Sienna Elizabeth Mapelli Mozzi,” Princess Beatrice of York wrote on Twitter.

The name is seemingly a nod to the Queen.

“We are all doing well and Wolfie is the best big brother to Sienna,” she wrote.

Sienna was born on September 18 at the Chelsea and Westminster Hospital in London.

Wolfie is the five-year-old son of Mr Mozzie.