Yesterday afternoon, Kelly Osbourne suffered a seizure while taping an episode of “Fashion Police” in front of a live audience.

TMZ reports, “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.”

Kelly was then rushed to a hospital where she was met by her mother, Sharon Osbourne. Apparently there’s still no word on what caused her to have a seizure in the first place.

Kelly tweeted the picture above, saying, “Thank U all 4 UR beautiful well wishes yes I did have a seizure they are just trying to figure out why?”

Osbourne’s rep confirmed to ET that she’s, “awake, alert and in stable condition,” and Kelly was kept in the hospital overnight as a precaution.

Hope she gets better soon!