The Christmas season takes place during the summer season, in Brazil. And so girls tend to wear brightly colored, lightweight clothing. They wear more formal dresses for the Christmas Eve and Christmas Day Masses. For the main Christmas meal, they also wear less casual clothing, such as more stylish dresses, slack outfits, and tops and dresses. But for outdoor activities, they put on the latest swimwear around the water, and more casual wear away from the water. For example, they may wear short dresses; or short skirts with sleeveless tops. What they wear on the dance floor, in a restaurant, or at the movie theater depends upon the particular establishment's dress requirements.
Thats what they wear for christmas.