Article continues below advertisementOK! can reveal Sharon Osbourne is privately begging her daughter Kelly Osbourne to avoid repeating her own mistakes after a period of dramatic weight loss that has left her feeling physically and emotionally drained. The warning comes months after the death of Sharon's husband, Black Sabbath frontman Ozzy Osbourne, and amid renewed public scrutiny of both women's pin-thin appearances following a rare joint red carpet outing in London.