also: ちゃらこ
noun
frivolous woman; good-time girl
Slang term for a woman who is flighty, superficial, or overly concerned with partying and casual relationships. Often used pejoratively. Compare with チャラ男 for men.
See also: チャラ男 (チャラお)
あのチャラ子は毎晩違う男と遊んでるらしいよ。
That good-time girl seems to hang out with a different guy every night.
チャラ子っぽい服装で面接に行くのはやめたほうがいい。
You shouldn't go to a job interview dressed like a frivolous party girl.
From チャラい (frivolous, flashy) + 子 (child, person). The exact origin of チャラい is uncertain, but it may be related to ちゃらちゃら (onomatopoeia for jingling or frivolous behavior).