On August 25, 2001, Mette-Marit Tjessem Høiby married Crown Prince Haakon of Norway in Oslo Cathedral. She wore a custom  Ove Harder Finseth wedding gown with a 20-foot veil. She wore the Diamond Daisy Tiara which was gifted to her by her father and mother-in-law for her wedding. According to Order of Splendor, the antique piece dates back to around 1910. 

Crown Prince Frederik of Denmark was the best man for Crown Prince Haakon, and Mette-Marit's son, Marius served as a page boy. He would appear with the couple on the balcony of the Palace after the wedding as well. 

Mette-Marit wore little makeup for her wedding and looked beautiful with her natural look. She cried throughout the ceremony. Many called her union to the Crown Prince a Cinderella moment.

Things were changed up a bit for the wedding. Instead of walking down the aisle with her father, Mette-Marit elected to meet her Prince outside of the cathedral to walk down the aisle together from the beginning. 

This was the first royal wedding in Norway since Haakon's parents wed in 1968.

The announcement of their engagement caused some controversy in Norway as it has been revealed by the media that Mette-Marit had been known to associate with those in the drug culture in her past. She also had a son out of wedlock. She tearfully condemned drugs in an interview before her wedding (she never did drugs herself) and has since become a valued member of the Norwegian Royal Family.

The couple now have two children together: Princess Ingrid Alexandra (b. January 21, 2004) and Prince Sverre Magnus (b. December 3, 2005). The Norwegian Royal Family has welcomed Marius as one of their own. The King and Queen treat him as an equal to their other grandchildren, and Haakon adopted Marius as his own, too.