Pirates of the Caribbean (The Curse of the Black Pearl): Redcoats – No Such Thing Then
This is a little bigger than a wardrobe mistake. In fact, the Red Coats from The Curse of the Black Pearl should not have existed! The Royal Marines had been wearing a different uniform back then. That unit was only formed in 1747, several decades after the setting of the movie.
Seabiscuit: Strapped Helmets Didn’t Exist Yet
Toby Maguire portrayed a jockey for this film and you will see him sporting a helmet that was only introduced in 1956. It might have been memorable headwear, though it doesn’t make sense as the movie took place during the Depression.