Sia initially didn't want to be on David Guetta's huge hit 'Titanium' because she wanted to be only a songwriter. 😲

Sia took off her black&white wig for Helen. 💇🏻‍♀️

The song 'Titanium' took her about a half hour to write.

Before her breakthrough, Sia starred as herself on 'Home and Away.'

She wrote the five-time platinum track 'Diamonds' for Rihanna! 😮

DYK ‘Chandelier’ dancer Maddie Ziegler is Sia’s goddaughter? 👍

Ever wonder why Sia always hides her face behind wigs? 🤔

Sia claims she had an "abusive" relationship with Shia. 💥

She covered Sia's 'Snowman' with a harp and a choir. 🤩

DYK Hudson's recent movie 'Music' was directed by Sia? 🎵😮

His cover of Sia's 'Chandelier' proves he's a great singer as well! 🙌

Sia leaves all the guests at a private event speechless as she belts out ‘Alive’! ❤️‍🔥

Adele advised her how to sing those high notes at concerts! 🎤

Sia taught her not to use words like “cuz”, “but”, “and” in her lyrics! ✍️

Maddie and Sia have an UNUSUAL bond. 🤨🔍⏰