Sia is basically the queen of mystery. For years, she hid behind giant blonde-and-black wigs, oversized bows, and Maddie Ziegler’s frantic, beautiful dancing. Because she wasn't showing her face, a lot of people just assumed she was some new, young pop star who popped out of nowhere in 2014 with "Chandelier."
Honestly, that’s not the case at all.
Sia has been in the game since the mid-90s, grinding away in the acid jazz scene long before she ever became a household name. If you’re wondering how old is the singer sia, she is currently 50 years old. She was born on December 18, 1975.
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The Adelaide Beginnings
Born Sia Kate Isobelle Furler in Adelaide, South Australia, she grew up surrounded by art and music. Her dad was a musician and her mom was an art lecturer. It’s kinda funny to think about her as a teenager in Australia, because she says she really found her voice at 17 while doing karaoke in Italy. She sang "Lean on Me" by Bill Withers and realized she had something special.
She spent her early twenties fronting a band called Crisp. They did some acid jazz stuff that sounds nothing like the "Cheap Thrills" era. By the time she moved to London in the late 90s, she was already a seasoned performer, even if the world didn't know her name yet.
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Why People Are Often Confused
The reason the question of her age comes up so much is that her "breakthrough" happened much later than your typical pop star. Most pop icons hit it big in their teens or early 20s. Sia was 38 when "Chandelier" took over the world.
She’d already spent years as a vocalist for Zero 7 and a songwriter for hire.
You’ve probably heard her work without realizing it. She wrote "Diamonds" for Rihanna and "Titanium" for David Guetta. By the time she decided to step into the spotlight as a solo artist again, she wanted privacy. The wigs weren't just a gimmick; they were a shield. She didn't want the "fame" part of being a celebrity, which usually involves people obsessing over how you look or how you’re aging.
A Timeline of Her Decades
- The 20s: Moving to London, joining Zero 7, and releasing Healing Is Difficult.
- The 30s: Moving to New York, writing for everyone from Beyoncé to Christina Aguilera, and finally hitting #1 with 1000 Forms of Fear.
- The 40s: Becoming a mother (she adopted two sons in 2019), directing her first movie Music, and releasing Reasonable Woman in 2024.
- The 50s: Entering 2026 as a legendary figure who has officially outlasted the "flash in the pan" pop cycle.
Life Lately
Sia's life has changed a lot in recent years. She’s been very open about her neurodivergence, revealing in 2023 that she is on the autism spectrum. This honesty has made her a hero to a whole new demographic of fans.
She also recently navigated a separation from Dan Bernad in late 2025, showing that even with all the success, she's still just a human dealing with the same life shifts we all do.
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There's something incredibly cool about a woman in her 50s still being a massive force in an industry that is notoriously obsessed with youth. She didn't follow the rules. She didn't show her face when she was "supposed" to. She didn't stop making hits once she hit 40.
How to Stay Updated on Sia
If you want to keep up with what she's doing now that she's 50, your best bet is to follow her official social channels or her website, siamusic.net. While she’s less "hidden" than she used to be, she still keeps a relatively low profile compared to the Kardashians of the world.
Check out her most recent album, Reasonable Woman, to hear how her sound has evolved. It’s got that classic Sia power but feels a bit more grounded. If you're a fan of her songwriting specifically, look up the credits on recent pop releases; she’s still frequently the "secret weapon" in the writing room for the next generation of stars.