Michael Douglas' son Cameron has been sentenced to an extra four and a half years in prison.

Cameron, 32, was originally serving five years after he pled guilty to possession and dealing methamphetamine and cocaine in April, but his time in jail has now been almost doubled after he repeatedly violated prison rules by arranging to get drugs while in custody.

Judge Richard Berman cited four different occasions in which Cameron's lawyer smuggled narcotics into prison for him in her bra when announcing the extended sentence. He also recommended Cameron is sent to a prison facility that can offer him drug treatment and mental health care. Speaking in court, Cameron said, "I cannot seem to find comfort within my own skin. I feel ashamed. I feel defeated."

The DJ and actor- who asked for the judge to send him to rehab to deal with the situation "medically" - has previously told the judge of a wish to turn his life around and become an entertainer: "I am sorry for my family and my loved ones for putting them through this nightmare of my making. I ask for an opportunity to be a role model to my younger brothers and sisters."