Valley girl

A valley girl is a socioeconomic, linguistic, and youth subcultural stereotype and stock character originating during the 1980s: any materialistic upper-middle-class young woman, associated with unique vocal and California dialect features, from the Los Angeles commuter communities of the San Fernando Valley. The term in later years was more broadly applied to any female in the United States who embodied ditziness, airheadedness, or greater interest in conspicuous consumption than in intellectual or personal accomplishment.