Princess Mabel has made her first public appearance since her husband's accident.
The royal attended a performance by the Dutch Royal Concertgebouw Orchestra at the Barbican Theatre in London, her first official duty since her husband Prince Johan Friso was hospitalised following a skiing accident in February.
Princess Mabel, 43, was accompanied by her sister-in-law, Princess Maxima, and donned an all-black outfit for the occasion.
The 43-year-old Dutch prince has been in a coma since February 17. He was trapped under the snow for 15 minutes after an avalanche in the Alps, near the resort of Lech.
Dr. Wolfgang Koller, head of trauma at the Innsbruck hospital where Friso was first treated, initially commented: "It is clear that the oxygen starvation has caused massive brain damage to the patient. At the moment, it cannot be predicted if he will ever regain consciousness."
Johan is now receiving treatment at London' Wellington hospital. His mother, Queen Beatrix, and the couple's children - Luana, 7, and Zaria, 6 - are frequent visitors.
Queen Beatrix said in a statement in March: "I express my gratitude for the enormous number of messages and kind expressions of sympathy we have received.
"It means a lot to know that so many people are thinking about us."