Public Transport Victoria say the badge is an "innovative way to strengthen the culture of good etiquette on public transport".
The badge is a great way to let people know you're expecting, especially on public transport.
The UK has been handing out "baby on board" badges for years and I pinned one to my jacket every time I rode the tube during my first pregnancy in London.
I wore that badge to and from my work, even during my first 12 weeks because I was just so tired.
It made me feel safe. The badge let people know I was pregnant and gave me permission to sit down during my commute. It also gave others an opportunity to be considerate, and they really were.
I hope the Australian version I've made will give pregnant women permission to take it easy before their world is turned upside down.