I can see how this could happen, but I can't help wondering if she inherited her dad's great sense of balance..

"Long story short I cracked my head open then kept passing out," she said on Twitter over the weekend.

Osbourne thanked all the "incredible doctors and nurses" at Mercy Hospital for taking care of her, but didn't elaborate on what happened. She tweeted that she had the "all clear," and that her "mum," Sharon Osbourne, came to get her.

To find out what happened, she said, we've all got to tune in to The Talk today on CBS.

UPDATE: Sharon Osbourne explained on The Talk today that Kelly went to a club to see a DJ, and at one point a guy she was dancing with asked, "Teach me how to ballroom dance, and so she did, and the guy takes down her to dip, and as her dips her down, she hits her head on an amplifier… it split her head open."