Britney Spears. Britney, 39, famously suffered a public breakdown in 2008 after checking out of rehab, which saw her shave her head and attack paparazzi with an umbrella.
After shooting to fame as a popstar aged 15, Billie recalled how working 18-hour days and having a 'lack of control' over everything had a very 'negative impact' on her life.
Looking back on her early years, Billie told how working relentlessly to become a music star took a toll on her mental health and eventually led to an eating disorder.
She explained: 'I don’t know anyone who worked as hard as I did at 15. 'It was a combination of burnout, the trauma of becoming really famous, being disconnected with my family, a lack of control in my life – hence the eating.
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