Should the ladies wear dresses?

女性必须穿礼服吗？

youdao

Theater, opera, when, ladies wear dresses, men should be wearing the dress, or at least wear dark clothes.

看戏、听歌剧时，女士要穿长裙，男士要穿礼服，至少要穿深色的服装。参加社会活动或正式宴会更是如此。

youdao

Would the ladies wear formal dresses?

女士是否需着正式服装？

youdao

Ladies are asked to wear formal day wear and are reminded strapless dresses, exposed midriffs and fascinators are not allowed.

CNN: Royal Ascot: Hats off to Ladies' Day!