Daily News & Analysis | Popstar Sia celebrates 5 years of sobriety with inspiring message on Twitter Daily News & Analysis Sia had earlier said that her life began spiralling out of control in 2005 due to her drinking problems. Sia Reuters. Australian singer-songwriter Sia has celebrated five years of sobriety with an inspiring message on Twitter. The 39-year-old 'Elastic ... Sia celebrates five years of sobriety with inspiring message Sia has been sober for five years |