fair-haired boy

US /ˈferˌhɛrd bɔɪ/
UK /ˈferˌhɛrd bɔɪ/
"fair-haired boy" picture
1.

a person who is especially favored or preferred by someone in authority

:
He's the boss's fair-haired boy, always getting the best assignments.
The new intern quickly became the department's fair-haired boy.