Kathy Hilton admits daughter Paris' partying days were 'scary': 'It got very out of control'

Kathy Hilton admitted she used to call the New York Post to help her locate Paris when she was clubbing in New York City.

"There was a moment. I was actually worried about Paris for a good while. And she was sneaking out and she'd go missing and I wouldn't be able to find her," Hilton said of Paris' partying days in New York City and Los Angeles. "And let's put it this way. It got very out of control and I was scared for her. And my husband was very scared for her. And you know, those nightclubs go on all night."The "Real Housewives of Beverly Hills" star called that period of time "very scary" and there were nights "I did not sleep."

"How about for two days, not knowing where your daughter is, and once hearing blood-curdling screaming, and then the phone hangs up. I mean, there's a lot of stuff people don't know," Hilton recalled.