Gia Allemand, who made it to the top four on The Bachelor and then appeared on two seasons of Bachelor Pad, is in critical condition at a New Orleans hospital.
The 29-year-old model was rushed to University Hospital "following a serious emergency medical event" on Monday night, ABC said in a statement.
"On behalf of the family, we kindly ask for privacy at this time," the release states.
No more information about the emergency Gia Allemand suffered was released.
Allemand's mother is reportedly with her at the hospital, as is her boyfriend, NBA player Ryan Anderson of the New Orleans Pelicans.
Jake Pavelka, who wooed Gia on The Bachelor, Tweeted, "Please pray for @GiaAllemand… A dear friend and one of the sweetest women I know… #powerofprayer."
We wish her a speedy and full recovery ...