Princess Beatrice and her husband Edoardo Mapelli Mozzi welcomed their first child, baby daughter Sienna Elizabeth on September 18, this year.
The youngest royal member has now officially been added to Queen Elizabeth's royal line of succession. Sienna Elizabeth, is listed at the 11th spot in the line of succession to the throne on the royal family's official website, just behind her mother, as "Miss Sienna Mapelli Mozzi."
The latest update has shifted Princess Beatrice's sister, Princess Eugenie, now a number lower in her rank.
The website has officially made the change almost five week after Sienna's birth while it took almost seven weeks to add Meghan Markle and Prince Harry's daughter Lilibet Diana.
Princess Beatrice and Edoardo did not announce their daughter's name to be Sienna Elizabeth until October 1, along with a sweet photo of the baby's footprints.