
Sia is grateful for this milestone.
In January, Sia admitted on The Late Late Show that she had struggled with drugs and alcohol abuse throughout her career. «I was a singer already for like 10 or 11 years to mediocre success, and I was an alcoholic and a drug addict, and I sobered up and decided I didn’t want to be an artist any more,» she said. «I was starting to get a little bit famous and it was destabilizing in some ways…so I thought, ‘What doesn’t exist in pop music at the moment?’ and it was mystery.»
1. Demi Lovato: The former Disney star also battled with drug addiction, and has described the pre-sober version herself as a «nightmare.» Now, Lovato is a co-owner of a rehab facility and tries to use her voice in any way she can to help others. «I still have more things to prove—not just about the things I can do with my voice,» she declared to Refinery29. «Some people think that because I’m young, I can’t stay sober. But these are things I want to prove to myself.»

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3. Tallulah Willis: Last summer Tallulah celebrated one year of sobriety with analcohol-free party. «Last night was one of the most beautiful nights of my life. I was surrounded in a womb of the purest form of love,» she captioned a picture of a celebratory cake.

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