Denmark's Princess Isabella marked the end of high school by participating in the traditional Danish 'student truck ride' as her parents, Queen Mary and King Frederik X, beamed with pride. The 19-year-old princess, who is due to begin her military service in August, was enrolled at Oeregaard Gymnasium in Hellerup and received her white graduation cap on June 23, Hola! reported. The Danish Royal House marked the milestone with heartwarming new photographs from the ceremony, which was also attended by Isabella's siblings, Crown Prince Christian, Prince Vincent, and Princess Josephine. Pictures showed Isabella, dressed in a red top and white skirt in a nod to Denmark's national colours, hugging her friends and family, as Queen Mary, 54, looked lovingly at her daughter. The Australian-born queen was radiant in a striped, blue and white blouse with scalloped sleeves, which she paired with a denim midi skirt, tan sandals, and gold hoops. After the ceremony, Isabella spoke to members of the press outside her school in Copenhagen and admitted she was 'super excited' about her military training. Today, Isabella joined her classmates for the 'student truck ride' on board the festively decorated vehicle. She was dressed in a purple, sleeveless top, denim jeans, and her graduation cap, as the young Danish royal embraced the festivities ahead of starting her 11-month army training at the Guard Hussar Regiment. Denmark's Princess Isabella, 19, with her parents, King Frederik and Queen Mary, after completing her final exam at Oeregaard Gymnasium in Hellerup She marked the end of high school by participating in the traditional Danish 'student truck ride' today Isabella told local reporters outside her school that 'I'm just super happy and proud of myself' after Tuesday's ceremony, as the Danish Royal House confirmed she can 'put a full stop to her high school years' in a statement. 'I've used the three years [at Oeregaard] extremely well, and I'm extremely happy with how it's gone up until the exam. I'm just super happy and proud of myself,' the Danish princess said. Asked how she plans to celebrate the milestone, a smiling Isabella shared she will join her family for a 'delicious lunch' before meeting some friends. 'Well, I'm going to spend the whole beginning of my summer at least giving it my all, with all my future and current companions, so I'm really looking forward to that. 'And then I'm just going to be with my family, and enjoy [the time off] until I have to [start my military training].' Isabella added that she hopes to 'educate myself even more than I have here at Oeregaard Gymnasium' during her 11-month training. 'And I just think it could be fun to challenge myself to the limit,' the 19-year-old princess said. 'But it's going to be super exciting and good for me anyway.' The Danish royal family first revealed that Isabella will follow in the footsteps of her older brother, Crown Prince Christian, and enrol in the army in April. Isabella, dressed in a red top and white skirt in a nod to Denmark's national colours, at her school, Oeregaard Gymnasium A royal family portrait! From left to right: Prince Vincent, Crown Prince Christian, King Frederik, Princess Isabella, Queen Mary,and Princess Josephine Australian-born Queen Mary was radiant in a striped, blue and white blouse with scalloped sleeves, which she paired with a denim midi skirt, tan sandals, and gold hoops Prince Vincent of Denmark, 15, hugging his older sister Isabella Denmark's future king, Christian, 20, holding his sister Isabella's graduation cap Isabella with her father, King Frederik Princess Isabella of Denmark posing on the traditional truck that Danish students ride in after graduating high school The princess running toward the traditional student truck as part of a Danish custom The move places her among the first cohort of young Danish women called up under the country's newly expanded conscription laws.Due to growing global instability - including rising tensions with Russia and geopolitical strain involving the United States - the country has fast-tracked reforms to bolster its defence forces.As of July 2025, all 18-year-old women have been required to register for potential military service, with the duration extended from four months to 11 months in a bid to strengthen combat readiness.Princess Isabella is expected to be among the first wave of young women to undertake the full-length program, which is a development that underscores both the urgency of the moment and the monarchy's alignment with national priorities.While it remains unclear whether the royal volunteered or was selected via the lottery system, early reports indicate that the initial intake of the expanded program has been largely made up of volunteers eager to serve.The new conscription model is expected to dramatically increase the number of young people undertaking service each year, with projections suggesting up to 6,500 recruits annually by 2033.And while the idea of a princess entering military life may once have seemed extraordinary, in modern Denmark, it's fast becoming the new normal.'The whole world is such an unstable place at the moment… we have to prepare ourselves for the future,' one recruit added.For Princess Isabella, that future is now just months away.