Singer Sia’s 8-year Sobriety Commemoration Echoed by Fans and Followers

Sia performs at V Festival at Hylands Park in Chelmsford, England, on Aug. 20, 2016. Stuart C. Wilson/Getty Images

Pop singer Sia tweeted on the night of Sept. 10, about her 8-year sobriety by writing “Eight years sober today. I love you, keep going. You can do it.”