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Sia turned 41 on December 18, 2016.

By: Mandy Price  |   | 
Sia with her hair braided on one side, her hands in coat pocket
Sia has been involved in the music industry since she was in her early twenties.
A black and white photo of Kellin Quinn singing in the mic. He is holding the mic with both of his hands, displaying the sleeve of tattoos. 1 of 14 Swipe To View More 14
American singer Kellin QuinnKellin Quinn has a five-word tattoo on his chestKellin Quinn and wife Katelynne QuinnKellin Quinn performing with his band, Sleeping with SirensKellin Quinn, lead singer of Sleeping with SirensKellin Quinn with his daughter, CopelandKellin Quinn performing on stage with Sleeping with SirensKellin Quinn, the lead singer of famous American band Sleeping with SirensKellin Quinn at one of his concertsKellin Quinn in one of his Instagram photosKellin Quinn during a concert in LondonKellin Quinn at the Warped Tour 2016Kellin QuinnKellin Quinn

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