Princess Beatrice called her four-month-old daughter, Sienna Elizabeth Mapelli Mozzi, a "little rockstar" in a personal thank-you note to fans.

Following the September 2021 birth of her daughter, whom she shares with husband Edoardo Mapelli Mozzi, the duchess received a slew of fan mail congratulating both her and the family. In response, Beatrice individually thanked fans with handwritten notes of her own. A snapshot of one of the notes was shared this week on Instagram by a royal fan account user (@life.of.a.duchess) who was among the group of well-wishers. The note was accompanied by a pink-and-white card stamped in paint with Sienna's adorable small feet.

"Thank you so much for thinking of us at this remarkable and special time," Beatrice wrote. "We are so thankful to have welcomed this little person into our family. She is a little rockstar!" She signed the note, "With love, Beatrice, Edo, Wolfie & Sienna."

Sienna, born on September 18, is the queen's 12th great-grandchild and younger stepsister to Christopher Woolf Mapelli Mozzi, nicknamed Wolfie, who is Edo's son from a previous relationship.

In October, Beatrice officially announced the name of her daughter via a joint statement with Edo featured on the official royal family Twitter account. "We are delighted to share that we have named our daughter Sienna Elizabeth Mapelli Mozzi," they wrote in the statement, alongside a similar photo of Sienna's footprints. "We are all doing well and Wolfie is the best big brother to Sienna."

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Beatrice and Edo got engaged back in September 2019, marrying the following year in July via an intimate ceremony at the Royal Chapel of All Saints at Royal Lodge, Windsor.

"We are both so excited to be embarking on this life adventure together and can't wait to be married," the pair said in their joint engagement announcement. "We share so many similar interests and values and we know this will stand us in great stead for the years ahead, full of love and happiness."

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Sabrina Park

Sabrina Park is a Digital Fellow at HarpersBAZAAR.com where she covers news, fashion, and culture stories. When she’s not writing she loves hanging out with her cat, reading outdoors and scrolling the depths of TikTok.