Also means
fancy-dress costume
Usage Note
Kostüm in theatrical contexts means a performance costume. The Kostümbild (costume design) and Kostümbildner (costume designer) are key creative roles. Outside theatre it also means a lady's suit or fancy-dress outfit.
Examples
"Das Kostüm der Hauptdarstellerin war historisch getreu und aufwändig bestickt."
Natural Translation
The lead actress's costume was historically accurate and elaborately embroidered.
Literal Translation
The costume of the lead actress was historically faithful and elaborately embroidered.

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