For a variety of reasons:
Some people are nudists or had nudists as parents therefore growing up in a nudist environment, so they don't feel comfortable wearing clothes.
Clothes can contain residues from detergents and chemicals, which some people are allergic to.
Clothes can make you sweat, adding to the discomfort factor
Clothes can be costly, so the less time a person spends with clothes on, the less clothes they have to buy
Some people do not find clothes comfortable, even if they didn't grow up being nudists or in a nudist environment.
They wear normal clothes but some people wear Santa hats Santa clothes or elf's hats
in italy they wear fanyish clothes .... some peole wear sort of the same kind of clothes from the USA ......
Canadias wear clothes like other people
There are no specific clothes that you wear on Thanksgiving. Some people like to get dressed up to go and eat with family, but you can wear casual clothes, too. Just wear whatever is comfortable to you.
Romanian People wear normal clothes
iran people wear clothes
people in France wear regular clothes
Some wear the traditional/tribal clothes, some don't. Google that in googl's images, i'm sure you'll find out (:
People in the United States do not wear special clothes for Christmas. Some might dress up a bit, but most wear clothes they would wear any other day.
some people wear the same clothes as some Americans and there are Africa cloths as well.
What kind of clothes do Filipino people wear
the clothes that chinese people wear