Gia Allemand, who was a contestant on season 14 of The Bachelor, was taken to University Hospital in New Orleans on Monday night.
According to a rep for the reality star, she is listed in critical condition following a serious emergency medical event, the details of which are currently not known.
Allemand's mother is said to be with her, along with her longtime boyfriend, NBA basketball player Ryan Anderson of the New Orleans Pelicans. The family is kindly asking for privacy at this time.
"@GiaAllemand is on life support w little pulse and barely breathing ..cause unknown ..next 48 hours critical please pray for Gia everyone," health and beauty expert Melinda Farina, a good friend of Gia's, tweeted a couple of hours after the family made their initial announcement.
"I'm so sad about my best friend right now...how could this have happened to such an incredible person..she needs to come out of it!"
Farina added: "Everyone I will keep you posted if I hear anything further right now it's not good-we all need to stay positive though she's tiny but strong."
Meanwhile, Allemand's rep just tweeted: "Understand everyone has questions about #GiaAllemand - another statement is pending for tomorrow...Prayers pls."
(Originally published Aug. 13, 2013, at 1:23 p.m. PT)