80-year old great-grandmother Betty Simpson is the coolest grandma on Instagram and she has 86,000 followers to prove it. Her great-grandson  Zach Belden created an account for her in January to support her battle with cancer.

Grandma Betty has also won a fan in Pharrell Williams who saw her doing her dance to his hit record “Happy” record.

See her pics below

All photos and videos are courtesy of GrandmaBetty

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