The Feud Rages On! Kyle Richards Stands By Husband Mauricio Umansky & Bails On Kathy Hilton’s Annual X-Mas Party!

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The Hilton/Richards family is falling apart.

Following the revelation that Kyle Richards‘ husband Mauricio Umansky wasn’t invited to Nicky Hilton‘s lavish London wedding back in July of 2015, more family drama has come to light. According to sources, Richards blew off big sister Kathy Hilton‘s annual Christmas party in solidarity of her husband.

Related: Kathy Stands By Kim During Her Legal Troubles

The insider revealed:

“Kyle was invited but did not attend. She didn’t want to go if Mauricio wasn’t welcome.”

As for why the Hiltons aren’t too keen on Mauricio these days, confidantes allege Kathy’s husband Richard Hilton experienced an incident of betrayal with the reality star.

After Richard taught Umansky the ins and out of the real estate business, the Beverly Hills resident started his own company and even poached clients to get ahead.

Yikes, sounds complicated!

Not to mention the situation is especially tricky considering Kathy isn’t happy with Kyle’s new TV series centering around her upbringing and her life as a child actress. Apparently Mrs. Hilton prefers to keep their family life private, including Kim Richardsstruggle with alcohol dependence.

The source added:

“In the past, Kyle’s come for an hour or so by herself and then left, but this year it looks like she put her foot down.”

Hmm, we guess the momma of four just got tired of the situation! We just wonder if the beauty will be there for Christmas dinner…

So, whose side are YOU on in this situation?

[Image via Instagram.]

Dec 14, 2015 5:17pm PDT