Kim Kardashian visited 'The Tonight Show' on Tuesday, where she revealed her secret for staying out of trouble.
"I've never been a drinker, I've never gotten into drugs," she said. "You know, I think I have such a close family... I think you know my sisters do enough drinking to kind of fill up the whole family."
Younger sister Khloe was arrested for DUI in 2007. Kim said that her dad, who died in 2003, entrusted her with getting older sister Kourtney home even before she was of legal driving age.
"From a young age, my dad made it very clear that, 'OK, you're the responsible one and you have to watch your sister, and taught me how to drive when I was 14 in case my sister or her friends were going to be drinking and I always had permission to drive," she said.
In Part 2 of the interview Kim addressed the controversy surrounding her remarks that she would date Justin Bieber if he was of legal age.
"I'm almost 30, this is illegal, this is disgusting," she said. "He's a cute kid and that's it."WATCH Part 1: WATCH Part 2: