Repeating pop-art style image of a red-haired woman with mouth open, on a black background, with an orange floral border along the bottom.

Age Ain’t Nothin’ But a Number: Sia & Other Artists Who Topped the Hot 100 After 40

BillBoard Age Ain’t Nothin’ But a Number: Sia & Other Artists Who Topped the Hot 100 After 40 7/28/2016 by…