Nicole Richie's Under 18 Rehab Hell

Nicole Richie has been speaking about her rehab nightmare after she became hooked on heroin at 13. The hollywood It girl described how she knew she was addicted from the first time she tried the drug.

In an interview with Marie Claire she said: "I can remember the first time I tried it as a teenager-there was a lot of vomiting. But your body becomes physically dependent on it right away."

During her parents hostile divorce Nicole turned to heroin as an escape and soon become an addict.

After discovering the extent of the problem she was admitted into a rehab designed especially for teenagers.

"They didn't want me to quit cold turkey becuase I could have had a seizure so they gave me medication to come off it," she says looking back.

"Anyone who goes to rehab will say that they don't remember their first week or two becuase your body just goes through the shock of coming off whatever you were on." However this was nothing out of the ordinary for Hollywood and Nicole describes how there are even different types of rehab to chose from.

"There are prison ones and hotel ones, I was in under 18 rehab," she says.

Nicole also defended her troubled pal Lindsay Lohan, who was arrested yesterday for drug and driving charges just weeks after leaving rehab.

"I think it's unfair for anyone to be singled out the way she had been. How many of your friends got into trouble when they were 19 or 20?" she asked.