LOS ANGELES -- Kelly Osbourne says she had a seizure and doctors are trying to figure out why.
The 28-year-old TV personality posted a photo on Twitter late Thursday of an IV in her tattooed left arm. She thanked her fans for their "beautiful well wishes."
Osbourne was hospitalized Thursday after collapsing on the set of E! network's "Fashion Police," where she serves as a panelist alongside Joan Rivers, Giuliana Rancic and George Kotsiopoulos.
Osbourne is the daughter of rocker Ozzy Osbourne and "The Talk" co-host Sharon Osbourne. She was profiled with her family on the MTV reality series "The Osbournes" and has appeared as a contestant on "Dancing with the Stars."
Representatives for E! and Kelly Osbourne did not immediately respond to requests for comment.