. 1 / 14

Kelly Osbourne has thanked fans for their well wishes after she suffered a seizure on Thursday.

RELATED: Celebs without makeup

Ozzy Osbourne's daughter collapsed while filming her show "Fashion Police," and was taken to a Los Angeles hospital.

RELATED: Kelly Osbourne collapses on set

A spokesperson assured fans the star was "awake" and "alert" and was undergoing medical tests, and now Osbourne has opened up about the drama.

The 28-year-old took to Twitter.com to upload a picture which shows her lying in a hospital bed with her arm hooked up to a drip, and she revealed doctors are attempting to discover why she suffered the seizure.

RELATED: Justin Bieber collapses onstage in London

In the accompanying post, she writes, "Thank U (you) all 4 UR (for your) beautiful well wishes yes I did have a seizure they are just trying to figure out why?"