Demi has long been criticised for her weight, but she has never wavered from her stance of body positivity.
But it's not just her weight that Demi has been honest about in the past. The singer has opened up before about her struggles with bulimia, bipolar, depression and maintaining her sobriety.
In her documentary, Simply Complicated, she even admitted that food "is still the biggest challenge in my life".
Later, in 2018, Demi entered rehab at 18-years-old, after revealing to the world she'd been self-harming and self-medicating with drugs and alcohol.
It was then that she was diagnosed with bipolar disorder.
Unfortunately, in June last year, shortly after releasing her single "Sober", the pop star suffered a near-fatal overdose, entering rehab once again after spending two weeks in the hospital.
Since then, Demi has left rehab and continues to fight for her mental health and sobriety.
What a survivor.
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