Has a new feud emerged on Real Housewives of Beverly Hills? According to a new report, new cast members Lisa Rinna and Eileen Davidson were seen going at it during a cocktail party thrown by Kyle Richards.

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Radar Online reported on Thursday that Davidson and Rinna got into a screaming match at Richards' party. "All hell broke loose!" a source told the website. "It turned into super b---- soap-opera drama. It was a screaming match."

Both women have started on Days of our Lives in the past. Radar reported that it all started when Rinna confronted Davidson in front of the entire cast. Their source said that Rinna went up to her and said, "I don't know what you have against me, but I'm tired of your evil eye dirty looks. You need to stop it!"

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Davidson then responded reportedly by saying "Who do you think you are? I barely know you!"

Davidson reportedly stormed out of the party. "Eileen has been nice and quiet, but people knew behind that was a catty girl," the source said. "So Lisa was antagonizing her until she exploded. Now Lisa is conspiring to bring her down."

Rinna and Davidson have apparently been giving each other looks all season. "When they were cast the other cast members were wondering if they were going to act or actually be real. Producers hired these girls to bring the drama and got concerned because they weren't bringing what was expected of them," the source said about the new women. "But now it's on."

Real Housewives of Beverly Hills Season 5 is currently still filming.

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Real housewives of beverly hills, Bravo, Lisa Rinna, Eileen davidson