1 definition by yesbitch

A cold, heartless bitch that believes she is the most amazing person alive. She walks all over people to get what she wants and will throw a fit if she doesn't get her way. Sierras are typically dirty blonde with frizzy curls and a high pitched voice.
That girl is such a Sierra, did you hear how she was talking to Devon earlier?
by yesbitch December 28, 2015
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