Sia has some big news. Earlier this year, the 44-year-old singer revealed that she'd adopted two teenage boys that "were aging out of the foster care system." Now, Sia's family is growing, as she explained during an interview with Apple Music's Zane Lowe, calling herself a "f--king grandma." "My youngest son just had two babies," said the "Chandelier" singer, per Entertainment Tonight. "I'm just immediately horrified.
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