四大美女

The canonical four are: 西施 (Xi Shi, Spring & Autumn period — 'sinking fish'); 王昭君 (Wang Zhaojun, Western Han — 'alighting goose'); 貂蝉 (Diaochan, late Han — 'moon hiding'); 杨贵妃 (Yang Guifei, Tang — 'shaming flowers'). Each maps to one element of the 沉鱼落雁闭月羞花 couplet.

usage

In modern Chinese, any office or campus with four stand-out attractive women will jokingly rank them as the 四大美女 of that context — the phrase is very productive for this kind of playful list.