valley girl

Short definition from Wiktionary

Noun

1. 1
   A girl or young woman from the San Fernando Valley, especially when stereotyped as superficial and material.
2. 2
   Any girl perceived to act or speak like a stereotypical valley girl.
3. 3
   Alternative form of valley girl.
4. 4
   Alternative letter-case form of valley girl.
5. 5
   Alternative letter-case form of valley girl.

Proper noun

1. 1
   Valspeak; the dialect of English stereotypically spoken by valley girls.