Sia has accused her estranged husband of "weaponising" her addiction battle in their custody battle.
The Chandelier singer filed for divorce from Daniel Bernad in March after two years of marriage and though they agreed at the time she would have full custody of their 19-month-old son Somersault Wonder, who is known as Summi, the former radiation oncologist took action on Tuesday (28.10.25) to request sole legal and physical custody of the little boy.
