Bethenny Frankel officially rejoined the cast of Bravo’s “The Real Housewives of New York City” only on Monday, but that doesn’t mean the reality-TV star's life has been drama-free since the cameras stopped rolling. Ahead of the Skinny Girl mogul’s announcement that she will be returning for Season 7 of the long-standing series following a three-season hiatus, her estranged mother, Bernadette Birk, spoke out about her daughter’s shocking behavior behind the scenes. According to Bernadette, Bethenny, 43, is a cheat and all-around “snobby” person.

“I tried to watch Bethenny’s show because I had a vested interest in it,” Bernadette told Radar Online of her daughter’s failed 2012 Fox talk show “Bethenny." “But after the first week I stopped because it was just terrible. I was bored.” 

According to Bernadette, her daughter, whom she hasn’t seen in more than a decade, acts differently in front of the cameras than she does in real life.

“The things she does and says on camera is not who she is,” she said. “She started changing at age 16. She became very snobby and very arrogant, especially towards me.”

Bernadette went on to slam her daughter’s brief marriage to businessman Jason Hoppy, with whom she shares her 4-year-old daughter, Bryn. According to Bernadette, she knew Bethenny’s marriage to Hoppy, 44, which ended in 2013, wouldn’t last due to her alleged history of cheating.

“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," Birk said. “I always said that Bethenny and Jason would divorce in two years. I just knew that as soon as that child was in day care he was gone."

Bethenny appears unfazed by her mother's allegations. Following several rumors that she would return to the program for its seventh season, Bethenny confirmed the casting news online Monday, saying, “How come I’m never a housewife when I’m a housewife?”

“After many years of hesitation, I have decided to return to my roots on ‘The Real Housewives of New York City.’ I have been through a long and arduous road since my departure, and I’m finally coming out on the other side. It finally feels right to go home again,” Bethenny said in a statement. “The idea of doing the show feels exciting and refreshing, like it did at the beginning all those years ago. New faces, new circumstances, and in many ways, a new me and a new life.”

Bethenny starred on the first season of “The Real Housewives of New York City” in 2008. After three seasons, she quit the program to lead her own Bravo spinoff “Bethenny’s Getting Married?” in 2010. In 2013, she debuted her talk show “Bethenny" only for it to be axed after just one season on air in February.

“Unlike my time on Bravo, I felt a bit diluted, filtered and somewhat constricted. I am a free spirit," Bethenny said of her daytime exit (via Us Weekly). “I have been striving and climbing and white-knuckling for so long that I need a rest from the grind. I'm a little over myself and wouldn't blame anyone else for being over me as well."