Keeping Up With The Kardashians star Kendall Jenner talks being one of the youngest of the infamous Kardashian/Jenner clan and confessed that it caused her to "grow up too fast."

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19-year-old Jenner, who is only older than 17-year-old Kylie Jenner, told Wall Street Journal  in its February 2015 issue how being raised in the household with famous sisters and brothers who were much older shaped her life today.

"I feel like I grew up too fast a long time ago. Having older siblings, you grow up around adults, so you mature more quickly. I saw my sisters and parents working every day, so I was pretty much brought up to be a workaholic."

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While it's safe to say she grew up pretty quickly, Kendall admitted she is afraid to get any older.

"I just turned 19 a couple weeks ago, and I'm scared to be 20. It's the first step out of being a teenager. My sister Khloe always says to me and my younger sister Kylie, 'You have your whole life to be an adult but only so long to be a kid.'"

She said that this has caused her to try to be more childish in some situations to have fun.

"I try to be as immature as I can sometimes - react to things as if I were 12. You can't take things too seriously. I just laugh thinking about my dad being a teenager, partying. It's the funniest thing. And it makes me think - what am I going to be when I'm like 65?"