Dolly Parton is at the center of fears she's at death's door – with insiders telling RadarOnline.com the pint-sized country icon has been putting a brave face on her drastic decline by recently telling the world, "I ain't got time to get old!"

The singer-songwriter, who is set to turn 80 in January, has spent the autumn battling what she has called " health challenges ," prompting a string of canceled appearances from Las Vegas to Tennessee. Article continues below advertisement

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She was recently forced to accept the Jean Hersholt Humanitarian Award at the Governors Awards via video link, then appeared only virtu

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