couturiere
noun
cou·tu·ri·ere kü-ˈtu̇r-ē-ər 
-ē-ˌer
: a woman who is a couturier
Example Sentences
Recent Examples on the Web There is a collaboration between the person who’s going to wear it and you, but ultimately the seamstress, or the couturiere, is of service. 
Vogue, 11 Apr. 2022
Vogue, 11 Apr. 2022 Word History
Etymology
French couturière, from Old French cousturiere, feminine of cousturier
First Known Use
1818, in the meaning defined above