Where were Kendall Jenner and Khloe Kardashian? Certainly not in Kylie Jenner’s luxurious 22nd mega-yacht party. The “Revenge Body” producer and Victoria’s Secret angel reportedly ditched their sister’s birthday bash to hang out with Justin Bieber and his wife Hailey Baldwin.

Kardashian, Jenner, and the Biebs went to The Nice Guy Restaurant in West Hollywood, California over the weekend, The Daily Telegraph reported. Although it wasn’t such a big deal because Hailey and Kendall had been really good friends, but what sparked the controversy was the fact that Kylie’s older sisters missed her party.

Apparently, the reasons behind the ditch did not really stem out from any sibling rivalry or jealousy. The site reported the possibility that Kardashian, 35, did not want to leave True while Jenner, 23, had prior career-related commitments.

The only sibling rivalry that is happening so far is Kardashian’s new crime show “Twisted Sisters.” Kardashian revealed that she was a true-crime fan and the “Twisted Sisters,” which she would be producing in partnership with Investigation Discovery (ID) channel, was all about that.

Unlike many crime shows that deal with killer wives and/or husbands, Kardashian’s “Twisted Sisters” will deal with scrutiny of crimes whose killers are their sisters. The show is comprised of 10-hour long episodes, Who reported.

Despite her interest in crime shows with killer siblings, Jenner’s sister reportedly assured her fans that the Kardashian - Jenner family dynamics had nothing to do with it.

“Anyone who knows me understands what a huge true-crime fan I am,” Kardashian said prior to the release of the show’s first season, New Idea reported. She added that the series would show the strength of the sisters’ bond but how twisted they could become when they’re triggered by jealousy.

Kardashian’s “Twisted Sister” will commence its 2nd season within the year. The head of ID ordered for the renewal of the show because of its strong ratings, Deadline previously reported.

Meanwhile, Kylie Jenner seemed unfazed by these circumstances, including the epic faux pass of her mom, Caitlyn Jenner. Apparently, Jenner [Caitlyn] uploaded a supposed snap of baby Kylie on her Instagram to greet her daughter only to find out that it wasn’t Kylie. Rather it was her older sister, Kendall.

Did that affront the cosmetic mogul? An unnamed source revealed that it wasn’t the first time that Caitlyn made that slip-up. The source added that Jenner was far from being offended and she was having way too much fun on her trip Hollywood Life exclusively reported.