This video is ofcourse in Dutch, but it will give a little impression.
I spend the day selling a lot of stuff at the freemarket with my friend Sophie. We had a blast. Later I saw the ceremony on tv at home and we ate tompoezen (maybe tompouce is a known English word, but I couldn't find a translation). The little princesses looked so cute in their blue dresses and Máxima (Willem-Alexander's wife) also looked stunning.