In May, the singer revealed during an interview with SiriusXM's The Morning Mash Up that she welcomed two sons into her family last year, sharing that she adopted the teenage boys when they were leaving foster care due to their age.
"I actually adopted two sons last year. They were both 18 — they're both 19 years old now," she shared at the time. "They were aging out of the foster-care system. Yeah, and I love them."
Sia's family has gotten even bigger since confirming the adoption news. In June, she revealed that she's become a grandmother after her youngest son welcomed children of his own.
"My youngest son just had two babies," she told Zane Lowe for Apple Music's New Music Daily. "I'm just immediately horrified. No, I'm cool. They call me Nana. I'm trying to get them to call me Lovey, like Kris [Jenner]. I'm like, 'Call me Lovey.' "
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