rainbow-colored clothes worn by celestial beings (such as the Eight Immortals); nichang

她在舞台上翩翩起舞，宛如穿着霓裳的仙女。

Nichang, abbreviation for the Tang Dynasty song or dance "Raiment of Rainbows and Feathers"

舞者身着霓裳，仿佛仙女下凡。