Khloe and Kourtney Kardashian found it "challenging" to have their mom as their manager.
The family shot to fame thanks to their reality show 'Keeping Up with the Kardashians' but the Good American co-founder recalled how she and her older sister were reluctant to take part before the programme began in 2007 and found it hard to be "bossed around" by their mother Kris Jenner.
