0307_kellyo_singleThat Osbourne family just can't catch a break.

ET Online was the first to report that Kelly Osbourne suffered a seizure while taping her show E! show, "Fashion Police," in Los Angeles on Thursday.

According to TMZ, "Kelly was sitting in a chair, shooting the show in front of a full studio audience.  Melissa Rivers was sitting next to her, filling in for Giuliana Rancic. Kelly turned to Melissa and said, 'I don't feel good,' and then she fell out of the chair and started shaking. Melissa then turned Kelly's head to help her. Someone from the audience -- a doctor -- then ran up and helped."

She was rushed to a hospital by ambulance, but her condition as of this writing is unknown.

This the second -- though more serious -- recent health problem for the 28-year-old who badly sprained her ankle a few weeks ago.

Kelly's younger brother Jack has been fighting a very public battle with Multiple Sclerosis, and their mother Sharon survived colon cancer a decade ago, and underwent a preventative double mastectomy last November.

More details to come...

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