The ugly sweater had a lot of screen time in the holiday classic National Lampoon’s Christmas Vacation. Every Christmas season since the film’s release in 1989, we’ve seen the Griswold family looking fly in sweaters that are ridiculous by today’s standards and only semi-fashionable for the ’80s. The use of the sweaters in this film is a mainstream example of self-aware ugly Christmas sweater-wearing. In 1989, Chevy Chase’s sweaters walked the line between self-aware irony and sincere ’80s fashion.