It is unlawful to wear a hat that obscures the view of others in a theater.

The Law Explained

You cannot don a massive, feather-adorned cap while attending a stage play or motion picture. This law dates back to the Edwardian era when women's fashion included incredibly wide, ostentatious hats that could easily block an entire row's view. Ushers were legally empowered to demand the removal of any headgear deemed 'overly expansive.'