Despite the constant flow of alcohol around, Real Housewives of Beverly Hills star Kim Richards is staying sober on the Bravo reality show.

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On Friday, Radar Online reported that Richards stayed sober while having a girls night with her fellow housewives. Last week, the girls (minus Lisa Vanderpump) had a night out at The Abbey in West Hollywood. Radar also reported there weren't even Bravo cameras there.

"Kyle [Richards] was drinking wine," an insider told the website. "But Kim and Lisa [Rinna] stuck to Diet Coke. And believe it or not, it was a legit get-together because there weren't even cameras there filming for the show."

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Even though Vanderpump wasn't at the girls gathering, she is seeming to get along better with her fellow housewives for Season 5.

E! Online reported last week that Vanderpump and her husband Ken Todd recently attended Brandi Glanville's housewarming party and were getting along with her. "They approached Brandi and chatted with her very cordially," a source told the publication. "I wouldn't say things were as good as they used to be, but fences seem to be mending."

Vanderpump is also friends with new housewife Rinna. "I love her and I have an authentic relationship with her," Vanderpump told E! Online about Rinna. "I do think she's very opinionated and vocal and I think that's a good thing for reality television or you fall asleep."

Real Housewives of Beverly Hills is expected to come back this fall.

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Real housewives of beverly hills, Bravo, Kim Richards, Lisa Rinna, Lisa vanderpump