grande dame
noun [ C usually singular ] uk/ˌɡrɑːnd ˈdɑːm/ us/ˌɡrɑːnd ˈdɑːm/
（在某个领域因经验丰富、知识渊博而）德高望重的女性，受人敬仰的女性，女泰斗
a woman who is respected because of her experience and knowledge of a particular subject
Vivienne Westwood is the grande dame of British fashion. 维维恩‧韦斯特伍德是英国时装界的泰斗。