Princess Isabella of Denmark Makes Her Tiara Debut on 18th Birthday in a Touching Family Heirloom

Princess Isabella wearing a gold gown and tiara on her 18th birthday.

Princess Isabella of Denmark is marking a major royal milestone for her 18th birthday. The second child of King Frederik and Queen Mary celebrated her big day on Monday, April 21—and her first-ever tiara is an especially meaningful one.

The princess wore an elegant orange gown for her official birthday portraits, with the Danish royal family releasing three different photos to celebrate the occasion. As is tradition, she received her first tiara as an 18th birthday gift, and the stunning turquoise piece she debuted in the photos has a sweet tie to her grandmother, Queen Margrethe.

Isabella wore the Turquoise Daisy Bandeau for her special moment, a headpiece that was a gift from her grandmother, whose nickname happens to be Daisy. According to the palace, the tiara is crafted "from gold and decorated with 11 rosettes of daisy-like flowers of decreasing sizes, made of turquoise and diamonds."

Queen Margrethe—who abdicated the throne to her son, Frederik, in January 2024—regularly wore the tiara over the years, including during a 2012 state visit with the president of China.

Princess Isabella wore an elegant off-the-shoulder gown in her portraits. (Image credit: Steen Evald/Kongehuset)

Her sash marks an important milestone as the princess was awarded the Order of the Elephant, the most important order of chivalry in Denmark. (Image credit: Steen Evald/Kongehuset)

Queen Margrethe wore the same tiara and earrings during a 2012 banquet. (Image credit: Getty Images)

Per the royal family, the turquoise tiara hails from "the late 19th century" and originally was owned by the Swedish royal family until Crown Princess Margareta of Sweden died in 1920. Margareta's daughter, Princess Ingrid, married King Frederik IX of Denmark, and the tiara then was passed down through the Danish royal family.

The delicate bandeau can also be "taken apart and used as a bracelet"—a useful function for a teenage princess. In addition to her new tiara, Isabella wore a pair of turquoise and diamond drop earrings once worn by her grandmother, along with a matching sash which indicates an important honor for the young royal.

Princess Isabella wore the Turquoise Daisy Bandeau and coordinating earrings. (Image credit: Steen Evald/Kongehuset)

For her birthday, Princess Isabella officially became a member of the Order of the Elephant, the most prestigious order of chivalry in Denmark. Pinned to the order's sash is a white enamel elephant accented with diamonds and a portrait of her father, King Frederik.

Princess Isabella also celebrated her birthday with a glamorous party on April 15, joining her parents and siblings Princess Josephine, Prince Vincent and Crown Prince Christian for a gala concert at the Royal Theater in Copenhagen.