Not often. She seems to avoid them as much as possible - using head-bands, even going to such length as to wear what many of us described as something you'd use to catch dustA rather shallow remark from my side but does Mette-Marit ever wear hats while she is in these official functions. The only hats I recall are of very offical events like state visits, foreign royal weddings and the national day.
Really, no watermark, what is that large green thing then?one picture from isifa without watermarks.
http://img169.imagevenue.com/img.php?image=32919_C1pia_de_15281145_122_821lo.jpg