noun
Cinderella girl; overnight sensation
Wasei-eigo term for a previously unknown girl who suddenly becomes famous, often through a single event or discovery. Carries a fairy-tale-like nuance of rapid transformation.
wasei-eigo (Japanese-coined English), from Cinderella girl
彼女はオーディション番組で優勝して、一躍シンデレラガールになった。
She won the audition show and became a Cinderella girl overnight.
あの新人アイドルはまさにシンデレラガールだね。
That new idol is a real Cinderella girl, isn't she?