Kendall and Kylie Jenner feel they had to grow up quickly because of their fame.
The teenagers star in their family's reality TV show Keeping Up with the Kardashians and admitted being in the spotlight hasn't always been easy but they turn to their older sisters, Kim, Khloe and Kourtney Kardashian, for advice and support.
In an interview obtained by RadarOnline, Kendall told the Scott and Todd Morning Show on 95.5 PLJ Radio: "I'm going to be 18 in four months.
"I'm growing up and so is my little sister. We may be growing up a little faster than other people but we have older sisters our entire lives who are in their 30s. We are a little more mature than someone our age but I don't think we're growing up too fast in any way. I think we're doing it right for the situation we've been put in. We've had to grow up fast just being in the public eye you kind of have to grow up fast."
It was recently claimed Kendall and Kylie's mother, Kris Jenner, and their sister Kim want to end their reality TV show in the near future because they wish the series on a "high note".
A source said: "Both Kim and Kris want to make sure they end on a high note, leaving fans wanting more, rather than try and stretch the show on for another few seasons and watch it die a death. Plus, they are now moving on in their lives ... exploring new options and opportunities."