Kelly Osbourne has tweeted to say doctors are "trying to figure out" why the star had her seizure.
Tweeting an image of her arm, from what looks like a hospital bed, she said:
"Thank U all 4 UR beautiful well wishes yes I did have a seizure they are just trying to figure out why?"
More top news
Cold & wintry end to the weekend
Obese people make a mountain out a molehill - because they see distances as further and hills as steeper than slim people, say scientists.
Christian Eriksen kept his cool to slot home a late Tottenham Hotspur winner at Manchester City.