* It's not a well-known fact: While John Wayne did wear a skirt in the 1956 film "The Conqueror," it's not a widely publicized detail about his career. Most fans associate him with his rugged cowboy persona.
* Varying levels of knowledge: Movie buffs and those deeply familiar with Wayne's filmography are more likely to be aware of this fact. Casual fans or those unfamiliar with his work may not.
* Cultural context: What might be considered a "skirt" in modern times may have been perceived differently in the 1950s. The "skirt" worn by Wayne in "The Conqueror" was more like a flowing, knee-length tunic.
While some may know about the "skirt," it's safe to say that the vast majority of people are unaware of this detail about John Wayne's career.