Both Eugenie and the princess share descent from Queen Victoria
Princess Eugenie's newborn daughter, who arrived on August 3 in Lisbon, was pictured wearing a pink babygrow and matching hat from Marie-Chantal, the children's wear label established by Crown Princess Marie-Chantal of Greece.
Angel wings, the brand's signature motif, feature on both the sleepsuit and the hat.
The Angel Wing Pointelle Sleepsuit in Pink is priced at £55, while the hat is available as part of a set currently reduced to £23.
Eugenie shared the news on Instagram on August 4, writing: "Jack and I are so excited to announce Baby Girl Brooksbank!! We are beyond in love with our girlie."
The baby is the couple's third child, joining sons August, born in 2021, and Ernest, born in 2023. The family is based largely in Portugal.
Crown Princess Marie-Chantal founded her eponymous childrenswear line and is mother to five children with her husband, Crown Prince Pavlos of Greece.
Pavlos's father, the late King Constantine II, was Greece's last reigning monarch and a first cousin once removed of Prince Philip, Duke of Edinburgh.
The British and Greek royal houses share descent from Queen Victoria. Both of Pavlos's grandmothers were Victoria's great-granddaughters, while Queen Elizabeth II was her great-great-granddaughter.
Queen Elizabeth hosted a tea party to mark Pavlos and Marie-Chantal's wedding in London in 1995.
The bond between the two families extends beyond genealogy. King Charles III is godfather to both Pavlos and to his eldest daughter, Princess Olympia, while Prince William serves as godfather to Pavlos and Marie-Chantal's son Constantine.
Crown Princess Marie-Chantal and Crown Prince Pavlos attended Princess Eugenie and Jack Brooksbank's wedding at St George's Chapel, Windsor, in October 2018, accompanied by their eldest daughter, Princess Olympia.
Eugenie's decision to dress her newborn in Marie-Chantal mirrors a choice made by her elder sister earlier this year. When Princess Beatrice announced the birth of her younger daughter, Athena, in January 2025, the baby was photographed wrapped in a cashmere blanket from Marie-Chantal's angel wing collection.
Crown Princess Marie-Chantal responded warmly at the time. Speaking to Tatler, she said: "It's always such a treat when I see a picture of my brand on a family member, a friend or a customer.
"What a delight to see baby Athena wrapped beautifully in my angel wing cashmere blanket. It's one of my favourite pieces in my angel wing collection and I send all my congratulations to Princess Beatrice and her beautiful family."
The choice of Marie-Chantal by both York sisters shows the enduring links between the British and Greek royal households.
Royal fashion selections frequently carry layers of meaning, with garments chosen as much for their connections as for their appearance.
In this instance, the angel wing motif, a recurring design across Marie-Chantal's collections, has now featured in the birth announcements of two cousins within the space of a year and a half.
The sleepsuit worn by the Brooksbanks' daughter and the blanket chosen for Athena both belong to the same signature line.
Crown Princess Marie-Chantal and Crown Prince Pavlos remain close to the wider British Royal Family, a relationship rooted in shared ancestry and reinforced through godparenthood and continued social ties across generations.
