Dress code
A dress code was a rule enacted by some recreational facilities to govern how well dressed customers were required to be. A uniform code could also be referred to as a dress code. () Starfleet had a Starfleet uniform code. 

In 2373, the maitre d' at a nightclub that Nicky the Nose patronized in chapter 13 of Dixon Hill series holoprogram informed two Borg drones that they had a strict dress code. ()

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Fashion