United Kingdom, Oct. 4 -- Kim Kardashian "worries" about exposing her children to fame.

The 45-year-old star - who has North, 13, Saint, 10, Chicago, eight, and seven-year-old Psalm with ex-husband Kanye West - allows her kids to be in the spotlight as much as they feel "comfortable" with but admitted she had to "hold back" her teenage daughter, who is an aspiring musician and released her first EP earlier this year, as well as appearing on the cover of Dazed magazine.

Kim told The Sunday Times Style magazine: "I do worry about it. Each kid does what they're comfortable with. So, my little ones come around when I'm filming but they don't really do storylines.

"North loves it a little bit more than the rest. I hold her back. All she wan...