Liza Minnelli was hospitalized in New York City early Monday morning after falling out of her bed and hitting her head on the floor. According to reports, the 58-year-old showbiz icon was knocked unconscious by the fall. "Her bodyguard got nervous and he called 911," a police source tells People. "He said he couldn't get her up." The New York Daily News, meanwhile, says the Oscar winner "appeared intoxicated" when EMS workers arrived at her Upper East Side apartment. Minnelli is currently under observation and set to undergo a series of tests, including the Rorschach, the Count Backwards and the Who's Our President?