Kylie Jenner & Blac Chyna's Vicious Feud Reignites Over Wedding Plans

What truce? Kylie Jenner and Blac Chyna are back at each other's throats, despite their recent cease fire.

RadarOnline.com has learned 18-year-old Jenner has reignited the war after she decided the timing of her brother Rob Kardashian's engagement to Chyna was a low blow, especially considering she and Tyga were set to announce their own impending marriage.

Now friends tell RadarOnline.com Jenner has every intention of tying the knot "bigger and better" than her archenemy Chyna, 27.

"This is Kylie's new obsession — to make Blac and Rob's wedding look like a trashy club night," one pal revealed.

"Kylie's now digging deep for any intel on Blac's wedding so she can make sure hers is totally different," continued the friend.

Unfortunately for Jenner, the sneaky tactic works both ways.

"Blac's doing the same, since Tyga still talks to her, even though Kylie's tried to ban him from doing so," said an insider.

"The family's now worried they're going to end up with two bad marriages on their hands," added the insider.

"The main fear is that Kylie and Blac are going full force with their respective relationships just because of this ridiculous rivalry between them."