This week on “Keeping Up With the Kardashians” Season 11, the Kardashian-Jenner girls go on a family vacation to St. Bart’s island in the Caribbean. Kylie invites her boyfriend, Tyga, and her sisters are not happy about it. Meanwhile, Kris is still feuding with her daughters about Lamar, and Kourtney cyberstalks Scott’s friends.

“Keeping Up With the Kardashians” Season 11 episode 6 starts out with Caitlyn Jenner inviting Kylie out to the race track. Kylie had just received a Ferrari for her birthday, and Caitlyn thinks she needs to practice handling such a high-performance vehicle. Kylie agrees, and the two of them have fun on the track.

Thing go downhill, however, when Kendall arrives. She’s excited to spend some time with her sister, but Kylie decides to bail. Kendall is upset that Kylie isn’t taking advantage of the time to bond with her and Caitlyn.

Things get even worse when Kim tells everyone that Kylie has invited Tyga to St. Bart’s. They had all initially agreed to make it an all-girls’ trip, but Kris allowed Kylie to bring her boyfriend. Kris herself isn’t feeling too good about the vacation. She considers pulling out because she is still in the middle of a feud with Khloe and Kim, after she gave Khloe’s number to Lamar Odom.

Kris even threatens to kick Kim out of her house because Kim has been taking Khloe’s side and Kris feels attacked and disrespected. When Kris decides to go on the trip anyway, Kim, Khloe and the rest of the girls just decide to steer clear to avoid any conflict. Kris feels like a fifth wheel when she joins the girls' workout session and starts to wonder if joining the trip was a mistake after all.

Meanwhile, Tyga arrives and Kylie immediately spends every minute with him. Kendall tries to reach out by inviting the couple to do some activities on the island. However, Kylie isn’t interested and she spends most of her time just chilling with her boyfriend.

The mood turns even more sour when both Khloe and Kourtney’s men start to haunt them. Lamar does an interview with In Touch magazine, where he speaks out about his relationship with Khloe. Khloe and her sisters are upset that he would speak so publicly about it just when she is finally strong enough to go through with their divorce.

Kourtney faces a similar problem when her friends keep updating her about her ex-boyfriend Scott. She starts getting screen grabs of photos from Scott's trip to Mexico, so she starts to cyberstalk everyone in the photos.

Kris sees how much the interview is affecting Khloe and she finally understands why the girls are so upset that she gave Lamar her number. Khloe and Kim also recognise that Kris had good intentions when she did that and they finally make up.

Khloe is adamant that she and Lamar may still love each other, but she’s waited long enough for him to fix their situation. She wants to move forward and do what’s best for her. Meanwhile, Kourtney’s cyberstalking is getting worse, which is also the same with the tension between Kendall and Kylie.

Find out if the vacation will end in disaster when “Keeping Up With the Kardashians” returns next Monday at 9:30 pm AEST on E!.

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