Princess Beatrice has someone new to celebrate her birthday with this year

The British royal turned 37 on Aug. 8, 2025

AUGUST 8, 2025 11:11 AM EDTAUG 8, 2025, 11:11 AM EDT

Princess Beatrice's birthday is extra special this year. King Charles' niece turned 37 on Aug. 8. Friday marks the royal's first birthday since welcoming her second daughter, Athena Elizabeth Rose Mapelli Mozzi.

Britain's Princess Beatrice of York (C) her husband Edoardo Mozzi (CL) and children Sienna, Athena and Christopher joins fans lining the Mall waiting to greet the bus carrying the England women's national football team during the homecoming victory parade near Buckingham Palace in London on July 29, 2025 to celebrate the team winning Euro 2025. (Photo by JUSTIN TALLIS / AFP) (Photo by JUSTIN TALLIS/AFP via Getty Images)

Beatrice and her husband Edoardo Mapelli Mozzi's second child together was born prematurely in January at London's Chelsea and Westminster Hospital. "Athena arrived healthy, a few weeks before her due date. She was so tiny it took more than a few weeks for the tears of relief to dry and for life with our healthy baby to feel real. Her feet were so small – almost the same size as the paws on one of my older daughter’s soft bunnies," the Princess later shared in a personal essay for Vogue.

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Beatrice additionally shares daughter Sienna Elizabeth Mapelli Mozzi with Edo, who is also a father to son Christopher "Wolfie" Woolf from a previous relationship. Following Athena's birth, the dad of three gushed on Instagram, "We are all (including Wolfie and Sienna) already completely besotted with her."

Sienna will celebrate her first birthday since becoming a big sister next month. The couple's older daughter will turn 4 years old on Sept. 18.

Sisters Sienna and Athena were spotted out with their parents and big brother last month as they joined the crowds lining The Mall in London for the Lionesses' homecoming victory parade. Over a week before their family outing, Beatrice and Edo celebrated five years of marriage. The CEO and founder of Banda Property commemorated their fifth wedding anniversary on July 17 with a makeup-free photo of Beatrice and himself on a beach in Scotland.

ASCOT, ENGLAND - JUNE 19: Edoardo Mapelli Mozzi and Princess Beatrice of York during day three of Royal Ascot at Ascot Racecourse on June 19, 2025 in Ascot, England. (Photo by Samir Hussein/WireImage)

"Happy 5th Anniversary to my incredible partner, the most beautiful and amazing wife," Edo wrote alongside the picture. "I cherish every moment we’ve spent together and am deeply grateful for our journey. Here’s to countless more years filled with laughter and tons of love! 🩷."

Princess Beatrice is Prince Andrew and Sarah Ferguson's elder daughter. The mom of two is currently ninth in line to the throne, while her daughters are tenth and eleventh, respectively.