UNICEF Goodwill Ambassador

UNICEF Goodwill Ambassador is an official postnominal honorific title, title of authority, legal status, and job description assigned to those goodwill ambassadors and advocates who are designated by the United Nations. The United Nations International Children's Emergency Fund (UNICEF) along with other United Nations agencies, has long enlisted the voluntary services and support of prominent individuals as goodwill ambassadors to advocate causes.

Source: Wikipedia — UNICEF Goodwill Ambassador (CC BY-SA 4.0)