Kate Moss has been sober for two years.
The 46-year-old supermodel - who rarely speaks about her personal life - used to be known for her hard-partying ways but her friend, DJ Fat Tony, has revealed she is now "clean" and they have more fun than ever together.
Tony - who himself has been sober for 13 years - said: "Kate's been clean for over two years. Me and my sober mates now have a better time than we ever did when we used to drink and take drugs."
The DJ - whose real name is Tony Marnach - also claimed he helped Boy George get sober 12 years ago.
He told the Sunday Times Style magazine: "I've been best friends with him since I was 13. I moved in with him and got him clean. I got lots of people clean, people we've talked about, but I won't name names."
Tony's own addiction destroyed his relationships and let him to being declared bankrupt.
He said: "It was the 1980s, the 1990s. Drugs were everywhere -- everyone did them -- and you could get away with anything because there was no social media.
"[I spent] over £1m on drugs. That's a warning. I'm not bragging. I lost houses, I lost my sanity and I was bankrupt."
Kate has previously spoken of how she's tried to cut down on caffeine and nicotine and have more quiet nights in.
She has said: "I go to bed, I drink lots of water, not too much coffee, and I'm trying to cut down on cigarettes."
Kate - who has 17-year-old daughter Lila with former partner Jefferson Hack - has previously credited her friends for keeping her "sane".
She said: "I keep sane with my friends, all of them I've known for 20 years, so they know me very well, and I know them very well."