Ready for the weirdest news you'll hear all day? In hopes to raise money for the Adelaide Film Festival's film quiz night charity event, Sia is auctioning off a jar of her breath.
To prove its authenticity (because who wants to bid on a jar with no breath in it?), the film festival director confirms that Sia "gorgeously and magnificently" huffed and puffed into a mason jar.
"Whoever wins will be able to break the seal - or just let it be," she added. We certainly hope she brushed and flossed!
Surprisingly (and kind of disturbingly), Sia's not the only celebrity with weird items up for auction. Check out these other stars who've raised money in the creepiest ways.