According to the “Ugly Christmas Sweater Party Book ... with goofball dad characters like Chevy Chase’s Clark Griswold in “National Lampoon’s Christmas Vacation” turning the holiday ...

17—GREENSBURG — Friday, Dec. 20, is National Ugly Christmas Sweater Day ... such as Bill Huxtable from The Cosby Show and Clark Griswold from National Lampoon's Christmas Vacation.

The film follows the father, Clark Griswold (Chevy Chase), who ... the crossover of two popular holiday traditions — Christmas movies and ugly sweaters— is sure to add even more festivity ...