Andy Coen was slammed for dismissing "RHOBH" star Garcelle Beauvais' feelings.
He laughed when Lisa Rinna said she threw out Beauvais' memoir.
Cohen said he was sincerely sorry for diverting the topic during the conversation.
He said he had had a productive discussion with Beauvais about his insensitivity.
The radio presenter apologized for not being in tune with her feelings.
Rinna tossed Beauvais' memoir in the trash because it mentioned her daughter's eating disorder.
Kathy Hilton said she would not return to "RHOBH" if Rinna and Erika Jayne were still there.
Beauvais and Rinna begged the internet to stop bullying their kids.
They shared different messages on social media showing they wanted their children to be left alone.
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