The reclusive LA-based singer was herself criticised for not attending the big night.
“I made four thank you/acceptance videos for the arias. They chose to show one. I’m saddened to be getting s— for being a ‘no-show,” she tweeted.
An ARIA spokeswoman said in a statement, “Of her two award wins that were televised, the album of the year video acceptance footage was shown on air and Sia’s friend, Katy Perry accepted best female artist on her behalf.”
ARIA will post all her acceptance videos online.
But Fairfax/ AAP notes her video featured a man in a blonde-bob miming while the singer’s voice could be heard thanking people.
“On the upside, I won! Who wants one? First four people to document doing a good deed, I’ll send you an aria. GO,” she later tweeted.