On this day everybody gets to be themselves, have lots of fun, and not have to wear their work or school uniform, and business office or preppy clothing can be left in the closet and worn some other day. The celebration of National Ugly Sweater Day takes place every year on the third Friday in the month of December. That is the day that everyone gets to wear their ugly Christmas sweaters! These ugly Christmas sweaters that your grandmother buys for you every year for Christmas definitely will come in very handy on National Ugly Sweater day. Everyone will sit back and talk and laugh about all of the ugly sweaters that they have on or see other people wearing. Many schools all around the world let kids come to school wearing ugly Christmas sweaters on this special day.