Her husband has recently returned to royal duties after undergoing surgery to his back.
But Princess Mary went solo as she attended a gender equality event in Denmark, on Oct. 1.
The Australian-born royal participated in the Innovation Fund Denmark's InnoTalk in Copenhagen.
The Princess looked as elegant as always for the occasion – teaming a camel coat with a floral and black ensemble.
Upon arrival, Mary was received by Denmark’s Education and Research Minister Tommy Ahlers.
The prestigious event promotes gender equality in the workplace.
‘Denmark is daring for talent, but we are lagging behind our Nordic peoples and other countries when it comes to redeeming women's potential in the labour market,’ the InnoTalk website explains.
‘We are especially lagging in the field of research, innovation, entrepreneurship, IT and technical and science subjects. Fields that are crucial to the country's future competitive power.’
Princess Mary is passionate about equality and has previously delivered powerful speeches about its importance.
‘Human rights are the basic rights and freedom that belong to every person in the world from birth until death,” the 45-year-old has previously said.
‘As a nation, we have seen first-hand that gender equality is a prerequisite for economic growth, welfare, social cohesion and the freedom and opportunities of the individual.’
Attending the recent Innotalk event, Mary described it as ‘rewarding’.
‘It has opened our eyes to the fact that gender balance is not just about equality and justice,’ she said in a speech.
‘It is a direct way to strengthen competitiveness and innovation in society.
‘A catalyst for sustainable development.’