AceShowbiz -

Kylie Jenner allegedly does not want to be involved with the wedding of Rob Kardashian and Blac Chyna. Rumor has it, the Kylie Lip Kit founder refuses to be Blac's bridesmaid while the latter wants to call a truce by having her future sister-in-law stand by her side at the altar.

According to an insider, Kylie "is totally against the wedding" because she fears Blac is trying to sabotage her during the ceremony. "She fears Chyna will deliberately make her wear a frumpy, cheap-looking dress," the insider tells InTouch Weekly.

Not only Kylie, but also her sisters aren't exactly making the wedding planning a smooth process. Khloe Kardashian is reportedly apprehensive about the nuptials, while Kim Kardashian fears Blac will "steal her style" for the wedding. According to the insider, Kris Jenner is also trying to take control of the whole thing.

Rob allegedly doesn't even care if his sisters come to his wedding. The "Rob & Chyna" star just wants her family to be happy for him and Blac.

In a sneak peek for the Sunday, September 25, episode of "Rob & Chyna", Kylie and her boyfriend Tyga has an awkward run-in with Blac at Khloe's 32nd birthday party. Kylie awkwardly hugs Blac before she asks about Rob. Tyga also gives a warm hug to his ex. They even take a selfie together with Kim.