golden girl

Short definition from Wiktionary

Noun

1. 1
   A girl or young woman who has become unusually successful at an early age.
2. 2
   A favored female youth, held in high esteem by others, and for whom there are high hopes.
3. 3
   A young woman who is beautiful in a wholesome and healthy way.
4. 4
   An older woman, a female senior citizen.