Princess Isabella of Denmark Borrows Mom Queen Mary’s Earrings for a Glam 18th Birthday Celebration

Princess Isabella of Denmark Borrows Mom Queen Mary’s Earrings for a Glam 18th Birthday Celebration
The royal teen dressed up for a family outing to see a performance at the Royal Theatre’s Old Stage in Copenhagen in honor of her milestone birthday

The second child and eldest daughter of King Frederik and Queen Mary turns 18 on April 21, and she’s been celebrating with several events. On April 15, Isabella and her family stepped out at The Old Stage of The Royal Danish Theatre in Copenhagen for a gala performance in celebration the teen royal’s milestone birthday.

Isabella looked sophisticated in a navy blue gown, sweeping her hair back into an updo. She completed her look with something from her mother’s jewelry box: diamond fringe earrings.

Princess Isabella of Denmark arrives for a performance on the occasion of her 18th birthday at the Royal Theatre’s Old Stage in Copenhagen on April 15, 2025.
Princess Isabella of Denmark at the Royal Theatre’s Old Stage in Copenhagen on April 15, 20

Queen Mary debuted the impressive jewels in May 2017 at a birthday gala for King Harald and Queen Sonja of Norway. She’s since worn them to several royal events and for family portraits, often pairing them with her wedding tiara.

In a sweet link between her two eldest children, Mary also chose to wear the earrings at the gala dinner marking the 18th birthday of her eldest child, Prince Christian.

rince Vincent of Denmark, Crown Prince Frederik of Denmark, Princess Isabella of Denmark, Prince Christian of Denmark, Princess Josephine of Denmark and Crown Princess Mary of Denmark attend the gala diner to celebrate the 18th birthday of H.K.H. Prince Christian’s at Christiansborg Palace on October 15, 2023 in Copenhagen, Denmark.

This isn’t the first time that Princess Isabella has borrowed from her mother’s closet. When Isabella celebrated her confirmation in 2022, she wore a white blazer and matching trousers that belonged to Mary.

King Frederik’s wife of 20 years joked at the Global Fashion Summit in Copenhagen in May 2024 that she doesn’t have to share her ensemble with her daughters often.

“The age gap means they wouldn’t be caught dead in them,” she said, according to the North West Star. “However, when they will be seen in something that is mine, it always brings a smile to my face.”

Princess Isabella posed for photos with her family outside the performance, including her parents and siblings: Crown Prince Christian, Prince Vincent and Princess Josephine.

Her grandmother, Queen Margrethe — who passed the throne to King Frederick when she abdicated in January 2024 — was also in attendance, as were her cousins, Count Nikolai and Count Felix of Monpezat.

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The theatre was also filled with over 1,000 young people between the ages of 17 and 24 from across Denmark and its territories of the Faroe Islands and Greenland, who won tickets via lottery for the performance

.

Queen Margrethe II of Denmark waves as she arrives for a performance at the Royal Theatre’s Old Stage as part of celebrations to mark Princess Isabella of Denmark’s 18th birthday, in Copenhagen on April 15, 2025.

Queen Margrethe of Denmark Old Stage as part of celebrations to mark Princess Isabella’s 18th birthday on April 15, 2025.

On April 11, more young Danes convened at Aarhus City Hall to honor Isabella’s birthday in a tribute to the city’s young talent in music, sport, cuisine and design. The budget showed that the city spent about $42,800 for the festive celebrations, including a sustainable fashion show, music, dance performance and presentation of a birthday cake made by students from a vocational program.

The princess spoke at the event, thanking the city for celebrating her.

Princess Isabella of Denmark on stage thanking all for a great day at Aarhus City Hall to celebrate her 18th birthday on April 11, 2025 in Aarhus, Denmark. (
Princess Isabella of Denmark at Aarhus City Hall to celebrate her 18th birthday on April 11, 202

“Thank you so much for a very special birthday celebration. It makes me really happy to be celebrated in a city that means a lot to me and my family,” the Danish Royal House said in an excerpt of Isabella’s speech.

Catherine, Princess of Wales smiles as she attends the celebrations for Commonwealth Day at Westminster Abbey on March 10, 2025 in London, England.

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