burikko

noun2

1. •
   An adult woman who behaves childishly, especially a Japanese woman or a woman involved with Japanese culture.

   • While boy-crazy American girls labor at sophistication, Japanese women of marriageable age tend to act like girls, and are popularly called burikko—“pretending kids.” — 1989
2. •
   A (Japanese) style or fashion associated with excessive or false cuteness.

   • Girls laciness is not in Japan Madonna-style lace but rather First Communion lace—but with a perky falseness sometimes called burikko, or false-innocent. — 1994