wardrobe mistress
US /ˈwɔːrˌdroʊb ˌmɪstrəs/
UK /ˈwɔːrˌdroʊb ˌmɪstrəs/

1.
a woman in charge of the costumes and clothes in a theater or film production
:
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The wardrobe mistress ensured all actors had their correct costumes for the play.
•
She worked as a wardrobe mistress for a major film studio.