Miranda Kerr, Alex Perry, Sophie Monk, Tom Gleisner and Ryan Shelton are just a few of the Aussies supporting Communication Shutdown for Autism.
The global initiative will raise funds and awareness for autism charities, by challenging people to go without Facebook or Twitter for a day.
If not communicating for one day will help kids with autism then I look forward to every minute of it, Miranda Kerr says.
Join the Communication Shutdown, on 1 November, and show your support for people with autism.