Dress uniform
A dress uniform was a variant of a standard uniform often worn for special occasions, such as courts martial, delivering s, dinner parties, funerals, greeting of ambassadorial delegations and heads of state, and weddings. (; , and ; , , , and ; , , and ; ) 

They were often the subject of frequent discomfort to wear. (; )

Types
Bajoran dress uniform
Starfleet dress uniform

External link

it:Alta uniforme