TMZ reports emergency crews responded to her home in Southern California, where they performed CPR. The website says Presley had a pulse when rushed to the hospital.
The 54-year-old's current condition is unknown.
Presley is the only daughter of Elvis and Priscilla Presley.
She was most recently seen in public at the Golden Globes on Tuesday. She was there with her mother to celebrate the success of the film "Elvis."
This is a developing story. Check back for updates.