An elderly woman from Indiana known as 'Grandma Betty' will hit 300,000 Instagram followers on Wednesday. reports
Zach Belden, 18, started the photo-sharing account for his great-grandmother to keep friends and family updated on her battle with cancer. It has grown into something well beyond that.

Betty Simpson, 80, is in the final stages of her illness. But still, she poses for fun photos and dances for videos set to songs like Pharrell Williams' 'Happy.'

Just three weeks ago, Simpson had only 2,500 followers. This is the video she posted in celebration:

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