Princess Beatrice has shared on Twitter the name of her daughter with husband, Edoardo Mapelli Mozzi.
The couple's baby girl was born on Saturday, 18 September, in London, and weighed 2.78 kg. She is the couple's first child together; the property developer also shares son Christopher Woolf, 5, with ex Dara Huang.
"We are delighted to share that we have named our daughter Sienna Elizabeth Mapelli Mozzi," Beatrice shared on Twitter on Friday, with a print of her little one's feet.
Sienna's second name, of course, is the same as that of her great-grandmother, Queen Elizabeth II.
"We are all doing well," said Beatrice, "and Wolfie is the best big brother to Sienna."
SEE THE SWEET POST HERE: