Reality Tv star Kelly Osbourne is in a stable condition after suffering a reported seizure on Thursday (07Mar13).

Ozzy Osbourne's daughter is "awake" and "alert" and now undergoing medical tests at a Los Angeles hospital after collapsing while filming her U.S. Tv show Fashion Police.

A spokesperson tells Wenn, "She will be staying overnight for observation as a precautionary measure."

The 28 year old was taken to a hospital after passing out on the set of Fashion Police just before noon.

She reportedly turned to fill-in host Melissa Rivers in the middle of taping and complained she didn't feel well, before falling out of her chair.