She hasn't kept it a secret at all.
"I was a drug addict, a complete mess," she says of her early 20s. "You name it, I took it. Cocaine, ecstasy, even heroin – although I never injected... I had a job so I looked like I was holding everything together. But then the cracks started to show. I began letting people down and turning up late for work."
Taken from
HERE