Model is worried about sister Kylie as she decided to bring along boyfriend Tyga on the Kardashian-Jenner family holiday

They used to be inseparable, but Kendall Jenner and little sister Kylie’s once perfect relationship appears to be coming under strain.

On the summer the Kardashians enjoyed a well- household getaway to sunlit Barts, where Kylie chose to bring along her partner Tyga.

As well as in a look at an upcoming bout of Maintaining The Kardashians, Kendall can’t disguise her frustration as Kylie asserts on wasting nearly all of her occasion along with her partner.

“I was really looking forward to this trip to hang out with you,” she says disappointedly while Kylie, who moved into her own Calabasas mansion earlier this year, remains silent.

While in another scene, Kendall gives her worries on her sister with dad Caitlyn.

The I Am Cait star bluntly asks the model: “What’s the deal with Kylie?”

The Victoria’s Secret beauty, 20, replies: “She doesn’t have her priorities straight and I tell everyone that.”