Although a cause has not yet been determined, details have begun to emerge surrounding the death of Whitney Houston. TMZ reports that she was found by her hair stylist in a bathtub with her face underwater. As we reported yesterday, Houston was staying at the Beverly Hills Hilton and was pronounced dead at 3:55 p.m. PST. Authorities stated that they attemped to revive her for 20 minutes, but it became apparent that she had been dead for at least an hour before she was found. An autopsy is planned to take place today.