dress code

American  

noun

1. a set of rules specifying the garb or type of clothing to be worn by a group or by people under specific circumstances.

   a military dress code; The restaurant's dress code requires men to wear jackets and ties at dinner.

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dress code British  

noun

1. a set of rules or guidelines regarding the manner of dress acceptable in an office, restaurant, etc

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Example Sentences

Miss Genovese’s smile doesn’t reach her eyes; she seems offended by the notion that her own dress code could be improved upon, or that her operators would be less accomplished than the Hello Girls overseas.

From Literature

Abiding by the sartorial pecking order has become more complicated as the financial industry’s dress code has gotten even more casual since the pandemic.

From The Wall Street Journal

Robert Mueller, who ran the FBI from 2001 to 2013, was known to adhere to Hoover’s G-man dress code of white shirts and dark suits, admonishing agents who wore something more colorful.

From The Wall Street Journal

It might also help to ask your colleagues if there is an unwritten dress code.

From MarketWatch

He also survived the 2022-2023 "Woman, Life, Freedom" movement sparked by the death in custody of Iranian Kurdish woman Mahsa Amini, who had been arrested for allegedly violating the strict dress code for women.

From Barron's