The singer's diagnosis comes two years after controversy surrounding the depiction of the neurological condition in her film "Music."
In a profile about Griffin, The New York Times noted that Sia had a difficult time dealing with the controversy surrounding her film “Music.”
The two are now expecting their first child together but briefly split during a dark period in the pop star's life.
From Wilco and Beyonce to Jagger and Bowie.
Ziegler, now 15, was 11 when she and Sia started collaborating.
"Someone is apparently trying to sell naked photos of me to my fans. Save your money, here it is for free."
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