Credit: Twitter

Much of the drama in next week's episode of Real Housewives of Beverly Hills centers on Kim Richards accusing Lisa Vanderpump of making up an excuse for not attending her daughter's graduation. However, Lisa claims she has proof that she was out of the town at the time.

Tensions arise when Kim claims that her hairdresser spotted Lisa at SUR when Lisa supposedly claimed she couldn't attend Kimberly's graduation because she would be in Missouri. Yikes.

However, Lisa now is offering proof that she was not in L.A. for the weekend of Kimberly's big day. Someone tweeted at Lisa with an article that mentions that she was at an event for an alopecia charity in St. Louis during the weekend of the graduation. 

"Well, thank you!" Lisa tweets in response to the article. "It's a shame it's come to this."

In addition, one of Lisa's Twitter followers remembers her having tweeted a photo of herself with the kids that weekend, and Lisa confirmed that she had tweeted a photo. So she posted the photo again as proof, which can be seen at left.

Do you believe Lisa's side of the story, or do you think Kim might have a point?

Source: Lisa on Twitter