Sharon Osbourne has blamed her daughter Kelly Osbourne's energy drink habit for causing her mysterious seizures. The rock matriarch was left terrified last March (13) when her 29-year-old daughter suffered a fit and collapsed on the set of her TV show Fashion Police, landing her in hospital for five days. In an interview with Larry King on his Ora.TV web series Larry King Now, Sharon tells the veteran newsman that she believes the mysterious condition was caused by Kelly's penchant for caffeine-packed beverages. She tells him, "My thought was, you know those energy drinks? Whichever one she was taking, she would, like, guzzle that back, because they record her show early in the morning." Kelly previously admitted she still hasn't been given an official diagnosis for the seizures.