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

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

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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.

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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?"