VIDEO : Kim Kardashian: Kendall and Kylie Jenner's Relationship 'Is Not 'Rocky'

Kendall Jenner certainly wasn't happy that Kylie Jenner invited her boyfriend without telling anyone beforehand to the Kardashian "girls' trip" to St. Barts . Making the sister drama even more intense was the fact that prior to the trip, Kylie ditched Kendall while they were spending quality time with Caitlyn Jenner at the racing track. So is Kendall and Kylie's relationship still on the rocks? Kim Kardashian recently told E! News exclusively, "It's not rocky.