It looks as though Bethenny Frankel's own mother won't be getting a holiday card from her this year. Bernadette Birk is speaking out about the former reality television star, calling her a "cheating, lying, arrogant and nasty" person in a new interview.

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According to Radar Online on Monday, Birk exclusively told the site that fame has changed her and that she wasn't always so "self-absorbed."

She told the site, "She started changing at age 16. She became very snobby and very arrogant. Especially towards me. The things she does and says on camera is not who she is."

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What's more, Birk also says that she knew Frankel's marriage to her soon-to-be ex-husband Jason Hoppy would never last, and that she was one of the first people to predict their divorce. The couple share a 4-year-old daughter, Bryn.

She said, "She had sex with her first serious boyfriend while in high school at 16 years old, and she cheated on him about a year later. That is just how she is. She jumps from man to man. I always said Bethenny and Jason would divorce after two years. I just knew that as soon as that child was in day care he was gone. She was really nasty to him on the show."

According to People Magazine last Thursday, Frankel says that there is no truth to the rumors that she is going to be back on the hit Bravo franchise. She said, "I haven't signed anything. I have a great relationship with Andy Cohen and the housewives, and they've asked me to come back for years."

Just this past week, Frankel revealed whether or not she would join the show. In a new interview with Access Hollywood, Frankel said the idea would be "crazy" but it's something she wouldn't rule out.

When asked by Billy Bush on whether or not she would return, Frankel said on Wednesday, "I don't know, I talk to Andy but we're talking about another project right now. We're working on something, but it's a little bit of a secret. Everyone's asked me, but I would have to be crazy. And I am crazy."

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Bethenny Frankel