Katherine Jackson believes her son was addicted to plastic surgery.

Speaking on US TV show 'Oprah' yesterday (08.11.10), Katherine admitted her late son - who died of acute Propofol intoxication in June 2009 - became obsessed with going under The Knife because he didn't want Vitiligo, the skin condition he suffered from, leaving him looking "like a spotted cow".

She told host Oprah Winfrey: "He didn't want to start looking 'like a spotted cow,' he said. I don't know what in the world he did to change that, but he did.

"He had more than two, he was just embarrassed. I hear that people get addicted to plastic surgery, and I think that's what happened to him. I said, that's enough."

Katherine also revealed the day she heard her son had passed away was the "worst day of her life", but she doesn't believe Dr. Conrad Murray - who has been charged with the involuntary manslaughter of the singer - is responsible for Michael's death.

She added: "It was the worst day of my life. My heart dropped. I kind of felt it, but I was wishing that it wouldn't be.

"I can't accuse Dr. Murray of murder, I don't know if it was accidentally done or it was intentionally done. I don't want to get into that, but I have my thoughts. I don't think I'll ever, ever be healed. It hurts."