Dolly Parton’s sister Stella Parton reveals singer's SELFLESS request amid secret cancer battle

Stella Parton shared her sister Dolly's final selfless act of kindness.

Dolly Parton agreed to experimental cancer drugs for future patients' benefit.

She was known for her generosity and positive outlook on life.

Stella Parton honored her sister's memory and legacy of love.

Fans are encouraged to show more kindness and lift others up.