fair-haired boy/fair-haired girl
the favorite, the apple of someone's eye, privileged person, someone with pull, front runner, person after one's own heart, in one's good graces, persona grata, teacher's pet. "Fair-haired" is problematic because (1) making "fair" the preferred coloring is racist and ethnocentric; (2) the phrases are used of adults, which makes the boy/girl designation inappropriate; (3) "fair-haired boy" is common, while "fair-haired girl" is not.
