Australian singer Sia Furler is almost as well known for her extravagant wigs as she is her chart-topping hits.
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The 40-year-old Elastic Heart singer has frequently spoken about wearing disguises in an attempt to side-step unavoidable worldwide fame, but has now revealed a much deeper reason behind the wigs.
Appearing on Late Late Show host James Corden's hugely-popular Carpool Karaoke overnight, the Adelaide-born star said she found fame destabilising as someone who previously battled drug addiction.
"I don't wear this if there aren't cameras around. I only wear this to maintain a modicum of privacy," Furler explained to Corden.
"I was a singer for like 10 or 11 years to mediocre success, and I was an alcoholic and a drug addict.
"I sobered up and decided I didn't want to be an artist anymore, because I was starting to become a little bit famous, and it was destabilising in some way.
"So I thought, 'What doesn't exist in pop music at the moment?' And it was mystery. I was like there's pictures on Instagram of everyone at the dentist."
The Titanium singer battled with prescription drug addiction, alcoholism, depression and bipolar disorder for years and in 2010 planned to take her own life.
Following the split of her first band, Crisp, in 1997, Furler planned to move to London to be with her boyfriend, but he was killed in a road accident while she was on a stopover in Thailand.
"I was pretty f..ked up after Dan died. I couldn't really feel anything. I could intellectualise a lot of stuff; that I had a purpose, that I was loved, but I couldn't actually feel anything," she told The Sunday Times in 2007.
"We were all devastated, so we got shit-faced on drugs and Special Brew [beer]. Unfortunately, that bender lasted six years for me."
Her darkest point came in 2010 just months after the release of her fifth album We Are Born. In an interview with the New York Times, Furler said she used alcohol to get her through her US tour, and became addicted to pain medication as she struggled with fame.
"It's horrible, I just wanted to have a private life. Once, as my friend was telling me they had cancer, someone came up and asked, in the middle of the conversation, if they could take a photograph with me."
After writing a suicide note for her manager, a well-timed phone call from a friend encouraged her to get her life back on track and she enrolled in a 12-step program.
Today, Furler lives in LA and is happily married to documentary maker, Erik Anders Lang.
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