Kendall Jenner's tequila caused a major meltdown on 'Real Housewives of Beverly Hills'

There's been plenty of drama on The Real Housewives of Beverly Hills season 12, what with the legal fall-out of the Erika Jayne and Tom Girardi divorce, Crystal Minkoff's eating disorder struggles, the less-than-smooth inclusion of new castmates Diana Jenkins and Sheree Zampino, and more. But this week's drama came from a surprising source: the Kendall Jenner tequila brand, 818. 

During the ladies' trip to Aspen in last night's "The Girl with the Diamond Earrings" episode, Kathy Hilton wanted to share some Casa Del Sol tequila, the Eva Longoria brand in which Hilton and daughter Nicky Hilton are investors. "I know you girls like tequila," Hilton introduced the brand. "I would like to get everybody's opinion. I thought we do a little bottom's up."

However, a preview of next week's episode shows Hilton freaking out and storming out of filming after castmate Lisa Rinna orders "her friend Kendall Jenner's tequila," 818 Tequila, at the bar. (In case you might have forgotten, Rinna's daughter, Amelia Gray Hamlin, dated Jenner's sort-of brother-in-law, Scott Disick, around this time last year.)

“I am  f***ing pissed off,” Hilton is shown saying as she leaves the bar. “In front of me here right now and Kyle doesn’t do a  f***ing thing about it,” she says, referencing her sister and fellow castmate, Kyle Richards. 

The tequila-based blow-up was apparently so major that, along with Kathy reportedly threatening to leave the Aspen trip early, even Hilton's daughter, Paris Hilton, weighed in on the moment on Twitter, calling the slight against her mother "so unkind." Who knew Kendall Jenner's tequila was so powerful?!

Elsewhere on social media, eagle-eyed fans were quite taken with Lisa Rinna calling the young supermodel "her friend," despite Kendall Jenner not following the Housewife on Instagram. And, in great boozy karma, sales for Casa Del Sol have reportedly gone up since the episode aired.