|Nicole Richie's health problems are slowing down production on "The Simple Life" and causing fresh tension with co-star Paris Hilton, according to an on-set source.
Richie "collapsed" on location in Malibu around 4 p.m. last Wednesday, says the snitch.
"She was taken to her trailer immediately," according to the insider. "But she came around, so the crew didn't call an ambulance. She spent the rest of the day in her trailer and left Paris to complete the day's filming."(New York Daily News)