After meeting in September 2000 and marrying in 2004, King Frederik and Queen Mary welcomed four kids into the world, creating a gorgeous family unit.
Slowly, their children – Christian, Isabella, Vincent, and Josephine – are following in their parents’ footsteps as they fulfil their royal duties.
Mary herself made rare comments about her kids when she appeared on a Danish TV program called Søren Vester’s Garden – Biodiversity and Castle Gardens in 2025, during which she gave the show’s host a tour of the wild flower garden at the family’s summer residence, Fredensborg Palace.
“Our children are outside a lot,” she divulged. “I don’t think they think, ‘Now I’m going out into nature’. They think it’s nice to get fresh air and exercise in nature.”
But what do we know about each kid individually? Scroll on to find out.
Who are King Frederik and Queen Mary’s children?
Crown Prince Christian
King Frederik and Queen Mary’s firstborn, Crown Prince Christian, was born on October 15, 2005, making him 20 years old.
Now that King Frederik (previously Crown Prince Frederik) has been crowned King of Denmark, Prince Christian is heir to the Danish throne.
Princess Isabella
Princess Isabella is King Frederik and Queen Mary’s second-born child, but the eldest daughter. Princess Isabella was born on April 21, 2007, and will soon be 19 years old.
She is currently second in the line of succession.
Prince Vincent
Prince Vincent is King Frederik and Queen Mary’s youngest son and is a twin of Princess Josephine.
He was born on January 8, 2011, making him 15 years old.
Prince Vincent was born 26 minutes before Princess Josephine, technically making him the older sibling and securing his place as third in the line of succession to the Danish throne.
Princess Josephine
As mentioned, though being a twin to Prince Vincent, Princess Josephine is the youngest in the family.
She was born on January 8, 2011, making her 15 years old. Princess Josephine is fourth in the line of succession.
King Frederik and Queen Mary’s best family photos
Prince Vincent and Princess Josephine marked their confirmation at the Fredensborg Palace. After the ceremony, the Danish royal family took photos in the Garden Hall.
Mary’s siblings, Jane Stephens, Patricia Bailey and John Stuart Donaldson, also flew over from Australia after the death of their father.
The immediate family gathered for a photo after the ceremony.
On the same day, Princesses Josephine and Isabella united with their brothers for this loving snap.
How sweet!
The confirmation was a family affair. King Frederik’s brother, Prince Joachim, and his wife, Princess Marie, also came from the United States. Their children, Count Felix and Count Nikolai, were also there.
These four siblings share a close bond.
They’re clearly inseparable if this snap is anything to go by!
Princess Isabella and Prince Christian watched on and stood with their parents as their siblings had their confirmation.
King Frederik and Queen Mary proudly stood with the twins, Josephine and Vincent, for their confirmation.
They’re such a close knit family, and we love it!
On Christmas Eve in 2025, the royal family welcomed royal staff to the Knights Hall at Christiansborg Castle for a special Christmas event.
More than 450 guests were in attendance, and everybody enjoyed a variety of Christmas traditions.
During the event, King Frederik also made a speech.
Princess Isabella and Prince Vincent were photographed conversing at the event.
For the festive celebrations, Queen Mary and Crown Prince Christian were photographed looking at Christmas cards.
To mark Christmas Eve in 2025, the Danish royal family also went to a church service at Church of Our Lady in Copenhagen.
For Christmas Day, they went to a mass at Vor Frue Kirke.
In the lead-up to Christmas, Prince Vincent, Crown Prince Christian, Princess Isabella and Princess Josephine made gingerbread houses.
Leading up to Christmas, each member of the family lit candles on a wreath to mark Advent.
Every Sunday, they lit a candle, which represented a different family member.
King Frederik, Queen Mary, Princess Isabella and Prince Vincent marked their summer stay at Graasten Castle, with a traditional procession through the town.
The family has used it as a summer residence since 1935.
Princess Josephine joined both her parents on the Royal Yacht for a visit to the Faroe Islands in June 2025. It was Queen Mary and King Frederik’s first official visit to the islands.
In June 2025, all four of Mary and Frederik’s children took part in the annual Royal Run event- a 1.5km, 5km, or 10km race through the heart of Copenhagen and Frederiksberg that the King founded in 2018 to celebrate his 50th birthday.
Speaking of his family’s participation, Frederik said he was “very proud.”
To celebrate the 57th birthday of King Frederik X, the Danish Royal Family made a special appearance on the balcony of Frederik VII’s Palace in Amalienborg on May 26th.
The royal family came together to mark Queen Margrethe II’s 85th birthday at Fredensborg Castle on April 16, 2025.
Princess Isabella of Denmark celebrated her 18th birthday alongside her family on April 15, 2025 with a special performance at The Royal Theatre in Copenhagen.
Ahead of Isabella’s milestone birthday, the Danish royal family visited Aarhus City Hall on April 11, 2025 which showcased talent from local youth organisations.
On Christmas Eve 2024, the Danish Royal Household shared this heartwarming photo of all four of the royal children with their proud parents King Frederik and Queen Mary, alongside their grandmother, Queen Margrethe.
“From Marselisborg Castle, where the royal family is now gathered, we wish you a peaceful and Merry Christmas,” the photo was captioned.
Princess Josephine and Prince Vincent accompanied their parents to the town of Sisimiut on Greenland’s west coast in July 2024.
As part of their time in the Nordic nation (which is part of the Kingdom of Denmark), the family visited traditional Inuit winter houses, reindeer hunting grounds, and ruins from the colonial area.
Despite it being summer, the royals had to rug up, with temperatures failing to rise above 10 degrees during their stay.
During the same trip, the royals travelled by boat to view an innovative new whale microphone run by the Arctic Station that had been installed in Disko Bay.
The family then met with citizens from the city of Qeqertarsuag where they had coffee and took part in a running race with local children.
The Danish royal family came together to celebrate a special occasion on June 24, 2024 – the high school graduation of Crown Prince Christian!
For the occasion, the heir apparent wore a studenterhue; a traditional cap worn by Danish graduates on their last day of secondary schooling.
Queen Mary got behind the camera to capture this sweet family snap of King Frederik with Princess Josephine and her twin brother, Prince Vincent, decked out in the red and white colours of Denmark’s national soccer team ahead of their participation in the Euro 2024 tournament.
The accompanying caption read: “It starts in a little while, and at our place, we are just about to get ready for Denmark’s match start. My family and I wish @herrelandsholdet great luck for the European Championships.”
In the game, Denmark drew 1-1 against Slovenia.
On May 26, 2024, King Frederik celebrated his 56th birthday – his first as the King of Denmark.
And it looks like the birthday boy took a day off from driving around Amalienborg Palace. On this day, his eldest son, Christian, assumed the role of chauffeur, with Vincent in the back.
Meanwhile, Queen Mary was all smiles as she drove the second vehicle; her eldest daughter Isabella, rode up front with Josephine in the back.
On May 26th, 2024, the family was photographed waving to thousands of well-wishers as they stepped out together in celebration of King Frederik’s 56th birthday.
The full family is rarely spotted all together for occasions like this, making the moment even more special.
Queen Margrethe also joined her grandchildren, son, and daughter-in-law – huge smiles adorning all their faces.
On May 20, 2024, the family competed in the Royal Run, which takes place every spring in Denmark. King Frederik and Queen Mary have been regular participants since its inception in 2018.
Crown Prince Christian, Princess Josephine, Princess Isabella, and Prince Vincent posed for photos following their participation in the activities.
Royal watchers were quick to take to the comments section of the Instagram post to point out how grown up the children are!
“Omg, the twins have grown up,” one person wrote.
“It’s crazy how much Princess Isabella looks like King Frederik,” another pointed out.
Another said, “Beautiful siblings.”
The Danish royal family waved to onlookers after the proclamation of King Frederik and Queen Mary on January 14, 2024.
Another photograph of the family waving after the King and Queen’s proclamation. They stood on the balcony of Amalienborg Palace.
The family stood on the balcony of Amlienborg Castle at the 83rd birthday of Queen Margrethe on April 16, 2023.
The family posed for a photo on April 30, 2022, before Princess Isabella’s confirmation in Fredensborg Castle Church.
The family was photographed on February 6, 2022, as they arrived for the TV 2 News’ birthday show “Mary 50 We Celebrate Denmark’s Crown Princess.”
The family was photographed together following Crown Prince Christian’s confirmation at Fredensborg Palace on April 15, 2021.
The family stepped out at Amalienborg to celebrate Prince Joachim’s 50th birthday on June 7, 2019.
The whole family visited the village of Mikladalur on August 24, 2018, to see the statue at the sea of Kopakonan located on the Faroe Islands in Klaksvig.
The family visited a school in Torshavn during the first day of the Royal visit to the islands in Torshavn, Denmark on August 23, 2018.
The Danish royals were photographed on July 15, 2018, at the gate of Graasten Castle. There, they greeted the Titling-At-The-Ring Riders Event. It is an established tradition that the Royal family receives the riders at the gate to Grasten Castle before they begin their contest.
The King and Queen with their four children during the arrival at the live broadcast of the TV show ‘All of Denmark Celebrates the Crown Prince’, held on King Frederik’s 50th birthday.
The family attended a portrait unveiling and exhibition open at Frederiksborg Palace that was held on King Frederik’s 50th birthday.
The family attended the annual summer photo call for The Danish Royal Family at Grasten Castle on June 15, 2016.
Queen Mary and King Frederik were photographed with their children on the balcony of Amalienborg Palace on Queen Margrethe’s 76th birthday.
Queen Mary and King Frederik are photographed with their children on the balcony of Amalienborg Palace on Queen Margrethe’s 75th birthday.
The kids joined their parents as they posed for the annual Danish Royal family skiing photocall in Verbier, Switzerland on February 8, 2015.
Just look at those sweet smiles in February 2014 in Verbier. It’s certainly a popular spot for the family!
The family attended the annual summer photo call for The Danish Royal Family at Grasten Castle on August 1, 2011.
