It looks like there's drama going on between reality stars Kyle Richards and Brandi Glanville, and Kim Richards may be going against her sister.

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Tuesday night's new episode of Real Housewives of Beverly Hills was full of drama and tears after cast mates thought that Kim had ended her sobriety.

Eileen Davidson hosted a poker party, and when Kim got to the event, she appeared to be under the influence.

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By the end of the night, everyone was concerned about Kim, including her sister Kyle, but things got a little awkward when things between Glanville and Kyle got physical.

Kyle went over to her sister to confront her about possibly being drunk, and while Kim denied that she was on drugs, or drinking, it was clear that she was on something.

During Kyle's second attempt to talk with her sister, Glanville physically blocked her and when Kyle pushed her hand away, things got a little ugly.

Kyle ended up in tears and finally left the party with cast mate Lisa Rinna, and Glanville stayed with Kim.

Kim is opening up about the situation and it looks like she's siding with Glanville and not her sister.

In the RHOBH cast blog, Kim said that she was a little disappointed in her sister's behavior that night.

"I was hurt that all Kyle could say was how embarrassed she was," the reality star said. "As a sister, I would be worried, not embarrassed. I'm just grateful that Brandi was a good friend and supported me."