Norwegian post issued a set of stamps to celebrate the crown prince couple's 40th birthday.
Crown Prince Haakon had entered into matrimony with Mette-MaritTjessemHoiby on Saturday, 25 August 2001. In 2004 the couple moved to the Skaugum estate. With the birth of Princess Ingrid Alexandra the same year family happiness was firmly established, and further augmented when Prince Sverre Magnus was born the following year.
The Crown Prince and the Crown Princess have both become involved in social and humanitarian work. In 2003 the Crown Prince was appointed Goodwill Ambassador for UNDP which works, among other things, to reduce global poverty and in 2006 the Crown Princess was appointed Special Representative for UNAIDS. Before they married in 2001 they asked for wedding gifts in the form of money to start a new humanitarian fund.
Contributions totalled around six million kroner. Each year, on the couple's wedding anniversary, money from the fund is allocated to Norwegian projects supporting children and young people at risk and promoting social inclusion and to health and education projects outside Norway. Every autumn the Crown Prince and Princess pay a visit to a Norwegian county. These trips have brought them into close contact with the people of Norway.