Lisa Rinna was accused of not eating during Tuesday's episode of The Real Housewives of Beverly Hills, and in a new interview, she's fighting back.

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After Kathryn Edwards called her out during a San Diego luncheon, Rinna revealed the real reason behind her great shape.

“The word diet is never used in our house! I have two teenage daughters, and it’s just something that we don’t do,” Rinna told Radar Online on Friday. “I eat healthy. I workout. I do yoga six times a week. I want to be a role model for my daughters and show them what is healthy.”

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Rinna and her husband, actor Harry Hamlin, share two children together, daughters Delilah, 17, and Amelia, 14.

“Eating disorders are very, very serious,” she continued. “It’s not something that should be taken lightly. There has to be a thoughtful conversation about eating disorders. It can happen to anyone, and if someone is struggling with it, I would urge them to get help.”

As for Edwards' comments, Rinna responded, "Katherine doesn’t even know me. She doesn’t know how much I eat. Secondly, I don’t like to eat on camera. No big secret there. It’s hard to eat and talk while filming. Anyone who knows me knows that I eat! Ask my husband."

For more Lisa Rinna, tune into The Real Housewives of Beverly Hills season six, airing on Tuesdays at 9 p.m. on Bravo.