Matthew Perry He relied on doctors to finance his addiction, and as it turns out, that’s just the tip of the iceberg.

TMZ Studios has a new documentary – “TMZ Investigates Matthew Perry and the Secret Celebrity Drug Ring” – out today, Tuesday, on Hulu.

Several celebrities, including Kelly Osbournetalk about how it’s common knowledge in Hollywood that doctors prescribe certain drugs to celebrities. Kelly, for her part, was able to get Vicodin and Oxy from various Hollywood doctors. Here’s the thing… she was 13 at the time and the doctors never told her mom and dad what they were prescribing for their daughter.

It gets even worse…Kelly went to the pharmacy to fill the prescriptions without a parent present…we’re talking about a 13-year-old getting hard, addictive drugs from the pharmacy – no questions asked.

The documentary examines how doctors, promoters and even rehab centers turn celebrities into addicts… sometimes with fatal consequences.