优美 (yōuměi) describes something that is graceful and elegant in a refined, aesthetically pleasing way — used for scenery, music, dance, or language. It is broader than 优雅 (yōuyǎ), which focuses on refined personal manner or taste, and more formal than 帅 (shuài 'handsome, cool'). Unlike 苗条 (miáotiao), it does not describe a woman's figure.