Cindy Crawford and Rande Gerber's only son Presley Gerber has passed away tragically at the young age of 27. According to Los Angeles County Medical Examiner records, Kaia Gerber's elder brother breathed his last on Sunday, September 20, at a rehab facility. A representative for the late model's mother, father, and younger sister, tells PEOPLE, "The family is asking for privacy during this very difficult and painful time." An autopsy has yet to be completed, TMZ reported.