Kris Jenner celebrated her birthday on November 5 with The Real Housewives of Beverly Hills star Kathy Hilton, but not her other bestie Kyle Richards. Kyle may have gotten a cameo alongside Faye Resnick on Keeping Up With The Kardashians, but it looks like The Kardashians are siding with Kathy. After a tumultuous season of RHOBH that put Kathy and Kyle at odds, it's not surprising they both didn't attend.

While Kyle's schedule didn't allow her to attend Kris' birthday, her absence seems somewhat shady. Kyle was busy at Netflix's premiere of Mauricio Umansky's show Buying Beverly Hills on that same day. Mauricio's Netflix series could stir the pot with Kathy, since he previously worked for her husband Rick Hilton before venturing off to form his own company. At the premiere, Kyle was surrounded by her RHOBH besties Teddi Mellencamp and Dorit Kemsley. Kyle also showed off her friendship with Justin Sylvester from E! News in a silly red carpet moment. Buying Beverly Hills follows up and coming agents at Mauricio's high-end real estate company, The Agency. Kyle and Mauricio's daughters, Alexia Umansky and Farrah Aldjufrie, star in the show alongside experienced and fresh-faced agents.

Related: Why RHOBH Fans Think Faye Trolled Lisa at Kris Jenner’s Birthday Party

Kyle Richards Was Busy At The Buying Beverly Hills Premiere

Kyle was surrounded by her family, friends and Netflix's bold and brightest production team. Meanwhile, Kathy and Faye were busy singing karaoke with Kris and the Kardashian-Jenners. Kathy wore a hot pink suit, and was one of the few guests in attendance not dressed as Kris. Determined to leave the Lisa Rinna RHOBH drama behind, Kathy arrived as an icon all her own, and showed up and showed out as herself. It was suspected that Kathy and Faye may have been distracting Kris before arriving at the themed party. Kathy may not have gotten her conga line, but she sure got her Karaoke Night. Everyone, including Kathy, seemed to be having the time of their lives.

Kathy Hilton Was Singing Karaoke With Faye Resnick and Kris​​​​ Jenner

In RHOBH season 12, Lisa Rinna accused Kathy of being jealous of The Kardashians, but the formal invite seems to symbolize mutual respect and admiration. After years of watching Kris, Faye, Kyle, and Kathy's friendships unfold, it's easy to question where loyalties lie when Kyle and Kathy are feuding. Kris even told Faye about her excitable libido. Kim Richards seems more closely allied with Brandi Glanville, who could return to RHOBH, than any of the above. However, it now looks like Kyle and Kathy are vying for Kris's attention. One might wonder where Lisa Vanderpump lies in this Hollywood alpha old lady gang.

It's more likely than not that producers scheduled the Buying Beverly Hills premiere "conveniently" on the same night as Kris' birthday. The Real Housewives of Beverly Hills stars Kyle and Kathy may have played nice at BravoCon, but the word on the street is that they are still avoiding each other in public. Kyle skipped out on a family baby shower, much like Kris' birthday. With Kathy attending and Kyle scuttering away with her tail between her legs, Kathy may have the upper hand per usual.

More: RHOBH: The Real Story Behind The Kyle, Kim, & Kathy Family Feud

Source: E! News/YouTube, Kyle Richards/ Instagram