Lisa Marie Presley has been speaking about her battle with drugs and admitted she was once addicted to cocaine.
Elvis's daughter, who is a member of the Church of Scientology, said she had kicked the habit through her own will power and the help of her church.
The 34-year-old told the Daily Star she checked into the church's rehab centre and emerged a "new person."
She also revealed she used to watch her father pop pills.
But she said she was too young to appreciate what Elvis was doing.
"All the bad things never changed my love for him," said Lisa Marie, who is married to third husband Nicholas Cage.