The modern observation of many mondern holidays were often developed during the Victorian era. Children dress up in their best clothes for holidays like Easter or Christmas or wear costumes for some holidays like Haloween. There are some majorr differences between the celebrations and te clothes worn for certain holidays in different countries. Some holidays are specific national celebrations.
Children look forward to annual holiday celebrations.
Of course Christmas is number one on their list. Often children are dressed up in their best party clothes for Christmas. The girls seem to enjoy this, but the boys are less excited about it. Of corse, most children are willing to put up with a great deal given the loot they collect on December 25. Of course the holiday most associated with dressing up is easter.