Lisa Rinna is reportedly taking sides in the ongoing feud between the Richards sisters, Kim and Kyle, and Kathy Hilton.

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As the family's tensions play out on The Real Housewives of Beverly Hills, Rinna has allegedly spoken out, claiming Kyle should have never attended Nicky Hilton's wedding last July.

Rinna “is telling friends she thinks Kyle was absolutely insane to go to Nicky‘s wedding even after Mauricio wasn’t invited. If Lisa had been in that situation, she wouldn’t have gone to the wedding,” a source alleged to Radar Online on Wednesday.

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As Kyle revealed on the show, she was told it would be best if she didn't attend Nicky's wedding, despite a prior invite, before she was ultimately given the go-ahead. Meanwhile, her husband, Mauricio Umansky, and their daughters, Sophia and Alexia, were left off of the guest list.

“According to Lisa, Kyle just wanted to be at the wedding of the year. Mauricio did give Kyle his blessing that she go to the wedding, but it could be a decision that she regrets,” the source continued.

Still, claimed the source, Rinna may be discussing the issue in an effort to stay relevant with the ladies of the show.

“Lisa Rinna just seems to be inserting herself into multiple storylines this season in an attempt to stay relevant," the source alleged. "From questioning Yolanda Foster‘s Lyme disease diagnosis and now prying into Kyle’s marriage, some people think Lisa needs to take a step back and realize this is a reality television show!”