Keeping Up with the Kardashians star Kourtney Kardashian told her half-sister Kendall Jenner she 'was not happy' that she rated her the worst parent of their siblings while doing a joint interview.It stemmed from the 24-year-old Society Management Model's December 10th appearance on The Late Late Show with guest host Harry Styles, who cornered her with the question under threat of drinking 1,000-year-old eggnog.'I'll start by saying they all really are amazing.
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