The Norwegian Royal Family attended the annual Christmas Day service in the picturesque Holmenkollen Chapel on December 25, 2018 in Oslo

The Norwegian Prince Sverre Magnus looked straight ahead as he carefully escorted his grandmother Queen Sonja, 81, across the snowy ground on the outskirts of Oslo

Norway's Crown Prince Haakon and Crown Princess Mette-Marit, pictured, joined the King and Queen of Norway at the annual Christmas Day service 2018 in Oslo.

Princess Ingrid Alexandra, with her father Crown Prince Haakon to her right and brother and Prince Sverre Magnus to her left, wore a grey coat and heart pendant to the annual Christma Day service 2018 in Oslo

Crown Princess Mette-Marit of Norway wore a floral coat to the annual Christmas Day service 2018 at the picturesque Holmenkollen Chapel on the outskirts of Oslo which was burned down in an arson attack in 1992

Norway's Queen Sonja also took the arm of her grand-daughter Princess Ingrid Alexandra, pictured, flanked by Prince Sverre Magnus and King Harald, in Oslo as they attend the Christmas Day service 2018 at Holmenkollen Chapel

Norway's Queen Sonja took the elbow of her 13-year-old grandson Prince Sverre Magnus as the Norwegian royal family left a Christmas day service 2018 in Oslo

King Harald V of Norway, who has been on the throne since 1991, wore a thick overcoat buttoned up against the cold as he left the Christmas Day service 2018 at Holmenkollen Chapel in Oslo accompanied by Priest Silje Karlsen

Norway's Crown Princess Mette-Marit  and husband Crown Prince Haakon leave Holmenkollen chapel after the Christmas Day service 2018 in Oslo.

Crown Princess Victoria of Sweden attended United Nations summit in New York on September 24, 2018

Crown Princess Victoria of Sweden was back to her busy schedule as she made a speech during the General Assembly of the United Nations in New York on Monday, September 24, 2018

Crown Princess Victoria of Sweden put on a colorful appearance in a floral frock as she addressed members of the audience global sustainable development goals, focusing on keeping the ocean clean and marine resources

Sweden’s Crown Princess Victoria wearing her hair in a sleek bun, she put on a chic display in a floral frock for the occasion, opting for minimal make-up and carrying a matching bag to her shoes as she left the venue at the United Nations summit 2018 in New York

Crown Prince Haakon of Norway was also present at the high-level meeting on oceans during the General Assembly of the United Nations in New York, looking dapper in a navy suit

Swedish Crown Princess Victoria's dress featured a floral pattern and high neck collar with bell sleeves and a frilly hem reaching just below her knees.  Teaming it with a pair of nude heels, she flashed a glimpse of her impressive engagement ring as she addressed the room at the United Nations summit 2018 in New York.

Crown Princess Mette-Marit of Norway Attend the House of Literature in Oslo on August 21, 2018

Crown Princess Mette-Marit of Norway (right|) has become widely respected for her charity work and has been a special representative for UNAIDS

Norwegian Crown Princess Mette-Marit (right) in Oslo on Tuesday (August 21, 2018) with Prime Minister Erna Solberg and the author Olaug Nilssen

Crown Princess Mette-Marit in Oslo on Tuesday, August 21, 2018. Norway's future queen consort met Haakon at a music festival in the 1990s when she was a single mother, before marrying into the royal family in 2001

Crown Princess Mette-Marit of Norway sports a glowing tan as she steps out in Oslo for a literary talk following the summer break

Norwegian Crown Princess Mette-Marit, was all smiles as she arrived at the House of Literature for a talk with Prime Minister Erna Solberg and author Olaug Nilssen hosted by Riksteatret, a touring theatre troupe.

Crown Princess Mette-Marit of Norway stepped out in Oslo. The Crown Princess teamed her pared-back look with a simple navy skirt, snakeskin heels, and a small patent clutch bag

Crown Princess Mette-Marit of Norway in her signature platinum blonde locks in loose waves, while a crisp white jumper showcased her bronzed complexion, opted for a white top and a simple navy skirt, teamed with a pair of snakeskin heels as she stepped out in Oslo for her first public appearance in weeks.

Norway's Crown Princess Mette-Marit was all smiles as she arrived at the House of Literature for a talk with Prime Minister Erna Solberg and author Olaug Nilssen hosted by Riksteatret, a touring theatre troupe, on Tuesday August 21, 2018

Norwegian Royals Attend Unveiling Of New Sculpture Park on June 7, 2018 in Oslo, Norway

Princess Ingrid Alexandra of Norway seemed perfectly at ease when it was time for her to whip off the blue sheet covering the new sculpture, smiling for the cameras as she did so.

Princess Ingrid Alexandra of Norway, pictured today, is the eldest child of Crown Prince Haakon, 44, the heir to the Norwegian throne, and his wife, Crown Princess Mette-Marit, 44. Princess Ingrid Alexandra is expected to one day become Norway's second female monarch, after the 15th-century Queen Margaret.

Princess Ingrid Alexandra of Norway was joined by her grandmother Queen Sonja of Norway, 80, as she visited an Oslo sculpture park named in her honor

She might only be 14, but Princess Ingrid Alexandra of Norway demonstrated the poise and grace befitting of a future queen as she attended an event, and is joined by her grandmother Queen Sonja as she unveils a work of art in the Oslo sculpture park named in her honor on June 7, 2018

Princess Ingrid Alexandra of Norway sported a bubblegum-pink dress and white plimsolls, wearing her brunette hair in curls around her shoulders. The outfit perfectly complimented the sherbet blue shade of her grandmother Queen Sonja's jacket, waved to the crowds as they made their way through the Oslo sculpture park.

(L) Princess Ingrid Alexandra of Norway looked delighted with the sculpture - a tree growing out of a hand, is joined by her grandmother Queen Sonja (R) as she unveils a work of art in the Oslo sculpture park named in her honor

Princess Ingrid Alexandra of Norway's pale pink dress perfectly complemented her grandmother, Queen Sonja of Norway's blue jacket, pictured.

Princess Ingrid Alexandra of Norway was given the responsibility of unveiling a new work of art inside the gardens at the Oslo sculpture park named in her honor

Princess Ingrid Alexandra of Norway sported a bubblegum-pink dress and white plimsolls, wearing her brunette hair in curls around her shoulders.

Princess Ingrid Alexandra of Norway with grandmother Queen Sonja of Norway linked arms as they strolled through the sculpture park, waving to the gathered crowds.

Princess Ingrid Alexandra attends the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Norway's Queen Sonja and Princess Ingrid Alexandra attend the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Princess Ingrid Alexandra attends the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Princess Ingrid Alexandra in a bubblegum-pink dress, wearing her brunette hair in curls around her shoulders, attends the unveiling of sculptures in the Oslo sculpture park named in her honor.

(R) Queen Sonja and Princess Ingrid Alexandra (L) attend the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Princess Ingrid Alexandra attends the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Princess Ingrid Alexandra of Norway seemed perfectly at ease when it was time for her to whip off the blue sheet covering the new sculpture, smiling for the cameras as she did so.

Princess Ingrid Alexandra of Norway sported a bubblegum-pink dress and white plimsolls, wearing her brunette hair in curls around her shoulders. The outfit perfectly complimented the sherbet blue shade of her grandmother Queen Sonja's jacket, waved to the crowds as they made their way through the Oslo sculpture park.

Queen Sonja and Princess Ingrid Alexandra of Norway attend the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7,, 2018 in Oslo, Norway.

Norway's Queen Sonja and Princess Ingrid Alexandra attend the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Princess Ingrid Alexandra attends the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

 Queen Sonja and Princess Ingrid Alexandra attend the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Princess Ingrid Alexandra of Norway demonstrated the poise and grace befitting of a future queen as she attended an event, is joined by her grandmother Queen Sonja as she unveils a work of art in the Oslo sculpture park named in her honor

Princess Ingrid Alexandra of Norway is joined by her grandmother Queen Sonja as she unveils a work of art in the Oslo sculpture park named in her honor

Princess Ingrid Alexandra attends the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Princess Ingrid Alexandra of Norway attends the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Queen Sonja attends the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

 Queen Sonja and Princess Ingrid Alexandra attend the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

 Princess Ingrid Alexandra attends the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.

Princess Ingrid Alexandra of Norway sported a bubblegum-pink dress and white plimsolls, her outfit perfectly complimented the sherbet blue shade of her grandmother Queen Sonja's jacket, as they strolled through the Oslo sculpture park

Queen Sonja and Princess Ingrid Alexandra attend the unveiling of sculptures in the Princess Ingrid Alexandra's Sculpture Park on June 7, 2018, in Oslo, Norway.