11/20/2007 AT 12:05 AM ET
Mary-Kate Olsen has been hospitalized with a kidney infection, her rep tells PEOPLE.
The actress entered the emergency room of a New York hospital on Monday.
“Mary Kate got a kidney infection,” says rep Nicole Caruso. “She’s resting comfortably and will be released in the next day or so.”
“Mentally, physically, I feel pretty on top of my game right now,” she told EW.com in September, as she prepared for her debut in Showtime’s Weeds. “Talk to me next week, I don’t know. Today, I feel good.”