Christmas might not be such a happy holiday on the Real Housewives Of Orange County, especially between Ol' G Vicki Gunvalson and newbie Lizzie Rovsek. On the latest episode, I Couldn't Chair Less, the smack down was immediate at a holiday party. 

Lizzie Rovsek Totally Hazed By Other Wives

"Izzie ... Lizzie ..." Gunvalson insta-attacked Rovsek as they took a limo to a holiday party.

 "You can call me Elizabeth since you can't keep it straight," Rovsek shot back.

When Rovsek told the ladies she was former valedictorian and beauty queen, Gunvalson got more snarky:

"How many people were in your class, because I could be valedictorian of a class of one." She then yelled, "I don't ever want to be a pageant girl."

"You don't have to yell at me. You're not very friendly," Rovsek stated. "They say insecurities are very loud."

Things did not get better when Gunvalson only ordered six tequilas at dinner - conspicuously leaving Rovsek out because she didn't like her "disrespect."

Will these two make up for next week's Showdown at the Hoedown? Who knows? It looks like Gunvalson's got other matters on her mind according to the official Bravo synopsis:

"Vicki continues to struggle with her daughter's decision to move to Oklahoma as Briana asks her to come along on a house-hunting trip. Heather hosts her closest friends and family for a hoedown-themed breaking ground party for their new house."

Husband Tells Shannon Beador She Needs A 'Boob Job'

The Real Housewives of Orange County airs Monday (9 p.m. ET) on Bravo.

The Real Housewives Or Orange County Promo